Publications

On the size of a double blocking set in PG(2,q), Finite Fields Appl., 2 (1996) 125--137.
(with A. Blokhuis) pdf or ps or dvi file

On the size of a triple blocking set in PG(2,q), European J. Combin., 5 (1996) 427--435. pdf or ps or dvi file

Multiple blocking sets and arcs in finite planes, J. London Math. Soc., 54 (1996) 581--593. pdf or ps or dvi file

Maximal arcs in Desarguesian planes of odd order do not exist, Combinatorica, 17 (1997) 31--41.
(with A. Blokhuis and F. Mazzocca) pdf or ps or dvi file

On small complete arcs in a finite plane, Discrete Math., 174 (1997) 29--34. pdf or ps or dvi file

Partial unitals and related structures in Desarguesian planes, Des. Codes Cryptogr., 15 (1998) 231--236. pdf or ps or dvi file

An easier proof of the maximal arcs conjecture, Proc. Amer. Math. Soc., 126 (1998) 3377--3380.
(with A. Blokhuis) pdf or ps or dvi file

On nuclei and blocking sets in Desarguesian spaces, J. Combin. Theory Ser. A, 85 (1999) 232--237. pdf or ps or dvi file

On the incompleteness of (k,n)-arcs in Desarguesian planes of order q where n divides q, Geom. Dedicata, 74 (1999) 325--332.
(with A. Blokhuis) pdf or ps or dvi file

On the number of slopes of the graph of a function defined over a finite field, J. Combin. Theory Ser. A, 86 (1999) 187--196.
(with A. Blokhuis, A. E. Brouwer, L. Storme and T. Szonyi) pdf or ps or dvi file

Unitals with many Baer sublines, Des. Codes Cryptogr., 17 (1999) 237--252.
(with A. Blokhuis and C. M. O'Keefe) pdf or ps or dvi file

Polynomials in finite geometries, in: Surveys in combinatorics, 1999, Lamb, J. D. (ed) et al, Cambridge University Press. Lond. Math. Soc. Lect. Note Ser. 267, 17--35, 1999. pdf or ps or dvi file

Polynomials in finite geometry, in: Methods of Discrete Mathematics, 1999, Lowe, S. (ed) et al, Quaderni di mathematica, Napoli, volume 5, 71--101, 1999.
(with A. Blokhuis)

On intersection sets in Desarguesian affine spaces, European J. Combin., 21 (2000) 441--446. pdf or ps or dvi file

Linear (q+1)-fold blocking sets in PG(2,q^4), Finite Fields Appl., 6 (2000) 294--301.
(with A. Blokhuis and M. Lavrauw)

On (q²+q+2,q+2)-arcs in the projective plane PG(2,q), Des. Codes Cryptogr., 24 (2001) 205--224.
(with R. Hill, I. Landjev and H. Ward)

The classification of maximal arcs in small Desarguesian planes, Bull. Belg. Math. Soc., 9 (2002) 433--445.
(with A. Blokhuis) pdf or ps or dvi file

Commutative semifields of rank 2 over their middle nucleus, in: Finite Fields with Applications to Coding Theory, Cryptography and Related Areas, Mullen, G. L. (ed) et al, Springer-Verlag, 1--21, 2002.
(with M. Lavrauw)

On the classification of semifield flocks, Adv. Math., 180 (2003) 104--111.
(with A. Blokhuis and M. Lavrauw) pdf or ps or dvi file

The number of directions determined by a function over a finite field, J. Combin. Theory Ser. A, 104 (2003) 341--350. pdf or ps or dvi file

On ovoids of O(5,q), Adv. Geom., 4 (2004) 1--7. pdf or ps or dvi file

Symplectic spreads and permutation polynomials, in: Finite Fields and Applications, Mullen, G. L. (ed) et al, Springer-Verlag, 79--88, 2004.
(with M. Zieve) pdf or ps or dvi file

Symplectic spreads, Des. Codes Cryptogr., 32 (2004) 9--14.
(with J. Bamberg, M. Lavrauw and T. Penttila) pdf or ps or dvi file

The six semifield planes associated with a semifield flock, Adv. Math., 189 (2004) 68--87.
(with M. Brown) pdf or ps or dvi file

Bounds on (n,r)-arcs and their application to linear codes, Finite Fields Appl., 11 (2005) 326--336.
(with J. W. P. Hirschfeld) pdf or ps or dvi file

On ovoids of parabolic quadrics, Des. Codes Cryptogr., 38 (2006) 131--145.
(with P. Govaerts and L. Storme) pdf or ps or dvi file

How to use Redei polynomials in higher dimensional spaces, Le Matematiche (Catania), 59 (2004) 39--52 (2006).
(with M. Lavrauw) pdf or ps or dvi file

On ovoids of PG(3,q), Adv. Geom., 6 (2006) 177--198. pdf or ps or dvi file


On the graph of a function in two variables over a finite field, J. Algebraic Combin., 23 (2006) 243--253.
(with M. Lavrauw) pdf or ps or dvi file

Introducció als polinomis de Rédei, Butl. Soc. Catalana Mat., 21 (2006) 197--211. pdf

Affine blocking sets, three dimensional codes and the Griesmer bound, Discrete Math., 307 (2007) 1600--1608.
(with E. Montanucci) pdf or ps or dvi file

Functions over finite fields that determine few directions, Electr. Notes in Discrete Math., 29 (2007) 185--188. pdf or ps or dvi file

On linear codes whose weights and length have a common divisor, Adv. Math., 211 (2007) 94--104.
(with A. Blokhuis, A. Gacs, P. Sziklai and Zs. Weiner) pdf or ps or dvi file

A geometric construction of finite semifields, J. Algebra, 311 (2007) 117--129.
(with G. Ebert and M. Lavrauw) pdf or ps or dvi file

On the Hughes-Kleinfeld and Knuth's semifields two dimensional over a weak nucleus, Des. Codes Cryptogr., 44 (2007) 63--67.
(with M. Lavrauw) pdf or ps or dvi file

On the graph of a function in many variables over a finite field, Des. Codes Cryptogr., 47 (2008) 159--164. pdf or ps or dvi file

On the number of directions determined by a pair of functions over a prime field, J. Combin. Theory Ser. A, 115 (2008) 505--516.
(with A. Gacs and P. Sziklai) pdf or ps or dvi file

On the graph of a function over a prime field whose small powers have bounded degree, European J. Combin., 30 (2009) 1575--1584.
(with A. Gacs) pdf or ps or dvi file

Multiple blocking sets in finite projective spaces and improvements to the Griesmer bound for linear codes, Des. Codes Cryptogr., 53 (2009) 119--136.
(with S. Fancsali) pdf or ps or dvi file

Punctured Combinatorial Nullstellensatze, Combinatorica, 29 (2009) 511--522.
(with O. Serra) pdf or ps or dvi file

The polynomial method in Galois geometries, to appear in Current research topics in Galois geometry. pdf or ps or dvi file

Determining the largest subsets of a finite vector space in which every subset of basis size is a basis, submitted. pdf or ps or dvi file

Updated 9 March 2010