Symmetric designs, polarities and sub-designs. - P. H. Fisher; Tim Penttila; Gordon F. Royle (Discret. Math., 1988)

Inversive Planes of Odd Order. - P. H. Fisher; Tim Penttila; Cheryl E. Praeger; Gordon F. Royle (Eur. J. Comb., 1989)

One-point Extensions of Polar Spaces. - P. H. Fisher; Tim Penttila (Eur. J. Comb., 1990)

Hyperovals in PG(2, 16). - Christine M. O'Keefe; Tim Penttila (Eur. J. Comb., 1991)

The Block-Transitive, Point-Imprimitive 2-(729, 8, 1) Designs. - Werner Nickel; Alice C. Niemeyer; Christine M. O'Keefe; Tim Penttila; Cheryl E. Praeger (Appl. Algebra Eng. Commun. Comput., 1992)

Hyperovals in Hall planes. - Christine M. O'Keefe; Arlene A. Pascasio; Tim Penttila (Eur. J. Comb., 1992)

One-point extensions of finite inversive planes. - Tim Penttila (Australas. J Comb., 1993)

Block-transitive, point-imprimitive designs with lambda = 1. - Christine M. O'Keefe; Tim Penttila; Cheryl E. Praeger (Discret. Math., 1993)

Symmetries of Arcs. - Christine M. O'Keefe; Tim Penttila (J. Comb. Theory A, 1994)

Sets of Type (m, n) in the Affine and Projective Planes of Order Nine. - Tim Penttila; Gordon F. Royle (Des. Codes Cryptogr., 1995)

Antipodal Distance-transitive Covers of Complete Bipartite Graphs. - Alexandre A. Ivanov; Robert A. Liebler; Tim Penttila; Cheryl E. Praeger (Eur. J. Comb., 1997)

Ovals in Translation Hyperovals and Ovoids. - Christine M. O'Keefe; Tim Penttila (Eur. J. Comb., 1997)

BLT-sets over small fields. - Tim Penttila; Gordon F. Royle (Australas. J Comb., 1998)

Regular Packings of PG (3, q). - Tim Penttila; Blair William (Eur. J. Comb., 1998)

Monomial Flocks and Herds Containing a Monomial Oval. - Tim Penttila; Leo Storme (J. Comb. Theory A, 1998)

Hyperovals. - Tim Penttila; Ivano Pinneri (Australas. J Comb., 1999)

Triads, Flocks of Conics and Q. - Matthew R. Brown 001; Christine M. O'Keefe; Tim Penttila (Des. Codes Cryptogr., 1999)

Quasi-quadrics and related structures. - Frank De Clerck; Nicholas A. Hamilton; Christine M. O'Keefe; Tim Penttila (Australas. J Comb., 2000)

On Monomial Flocks. - Laura Bader; Dina Ghinelli; Tim Penttila (Eur. J. Comb., 2001)

Groups of Maximal Arcs. - Nicholas A. Hamilton; Tim Penttila (J. Comb. Theory A, 2001)

On Eggs and Translation Generalised Quadrangles. - Michel Lavrauw; Tim Penttila (J. Comb. Theory A, 2001)

Some Flocks in Characteristic 3. - Maska Law; Tim Penttila (J. Comb. Theory A, 2001)

Subquadrangles of Generalized Quadrangles of Order (q2, q), q Even. - Christine M. O'Keefe; Tim Penttila (J. Comb. Theory A, 2001)

Automorphism Groups of Generalized Quadrangles via an Unusual Action of P L (2, 2Sph). - Christine M. O'Keefe; Tim Penttila (Eur. J. Comb., 2002)

Symmetries of BLT-Sets. - Laura Bader; Nicola Durante; Maska Law; Guglielmo Lunardon; Tim Penttila (Des. Codes Cryptogr., 2003)

Symplectic Spreads. - Simeon Ball; John Bamberg; Michel Lavrauw; Tim Penttila (Des. Codes Cryptogr., 2004)

Spreads of T2(o), alpha-flocks and Ovals. - Matthew R. Brown 001; Christine M. O'Keefe; Stanley E. Payne; Tim Penttila; Gordon F. Royle (Des. Codes Cryptogr., 2004)

Bruen chains over fields of small order. - Ilaria Cardinali; Nicola Durante; Tim Penttila; Rocco Trombetti (Discret. Math., 2004)

Construction of BLT-sets over small fields. - Maska Law; Tim Penttila (Eur. J. Comb., 2004)

Flocks of circle planes. - Tim Penttila (BCC, 2005)

Hyperbolic Fibrations and q-Clans. - Ronald D. Baker; Gary L. Ebert; Tim Penttila (Des. Codes Cryptogr., 2005)

Flock generalized quadrangles and tetradic sets of elliptic quadrics of PG(3, q). - Susan G. Barwick; Matthew R. Brown 001; Tim Penttila (J. Comb. Theory A, 2006)

Tight sets and m-ovoids of finite polar spaces. - John Bamberg; Shane Kelly; Maska Law; Tim Penttila (J. Comb. Theory A, 2007)

The geometry of some two-character sets. - Antonio Cossidente; Nicola Durante; Giuseppe Marino 002; Tim Penttila; Alessandro Siciliano (Des. Codes Cryptogr., 2008)

Segre's hemisystem and McLaughlin's graph. - Antonio Cossidente; Tim Penttila (J. Comb. Theory A, 2008)

Tight sets and m-ovoids of generalised quadrangles. - John Bamberg; Maska Law; Tim Penttila (Comb., 2009)

A family of translation planes. - Andrew Hudson; Tim Penttila (Australas. J Comb., 2010)

New families of Q-polynomial association schemes. - Tim Penttila; Jason Williford (J. Comb. Theory A, 2011)

Planes in which every quadrangle lies on a unique Baer subplane. - William M. Kantor; Tim Penttila (Des. Codes Cryptogr., 2012)

On transitive irreducible BLT-sets. - Eric M. Nelson; Tim Penttila (Discret. Math., 2013)

Extending pseudo-arcs in odd characteristic. - Tim Penttila; Geertrui Van de Voorde (Finite Fields Their Appl., 2013)

Two-Character Sets Arising from Gluings of Orbits. - Antonio Cossidente; Tim Penttila (Graphs Comb., 2013)

Relative symplectic subquadrangle hemisystems of the Hermitian surface. - Antonio Cossidente; Giuseppe Marino 002; Tim Penttila (Des. Codes Cryptogr., 2014)

Some strongly regular graphs with the parameters of Paley graphs. - Liz Lane-Harvard; Tim Penttila (Australas. J Comb., 2015)

A new hemisystem of H(3, 49). - Antonio Cossidente; Tim Penttila (Ars Comb., 2015)

Remarks on Hadamard conjugation and combinatorial phylogenetics. - Cayla D. McBee; Tim Penttila (Australas. J Comb., 2016)

Some new two-weight ternary and quinary codes of lengths six and twelve. - Liz Lane-Harvard; Tim Penttila (Adv. Math. Commun., 2016)

Transitive hyperovals. - Benjamin C. Cooper; Tim Penttila (Des. Codes Cryptogr., 2016)

New families of strongly regular graphs. - Susan G. Barwick; Wen-Ai Jackson; Tim Penttila (Australas. J Comb., 2017)

Derivation of Cameron-Liebler line classes. - Alexander L. Gavrilyuk; Ilia Matkin; Tim Penttila (Des. Codes Cryptogr., 2018)

On the incidence maps of incidence structures. - Tim Penttila; Alessandro Siciliano (Ars Math. Contemp., 2021)

Relation between o-equivalence and EA-equivalence for Niho bent functions. - Diana Davidova; Lilya Budaghyan; Claude Carlet; Tor Helleseth; Ferdinand Ihringer; Tim Penttila (Finite Fields Their Appl., 2021)

Uniqueness of the inversive plane of order sixty-four. - Tim Penttila (Des. Codes Cryptogr., 2022)

Classification of flocks of the quadratic cone in PG(3, 64). - Giusy Monzillo; Tim Penttila; Alessandro Siciliano (Finite Fields Their Appl., 2022)

Classification of spreads of Tits quadrangles of order 64. - Giusy Monzillo; Tim Penttila; Alessandro Siciliano (Finite Fields Their Appl., 2023)

Eggs in finite projective spaces and unitals in translation planes. - Giusy Monzillo; Tim Penttila; Alessandro Siciliano (Des. Codes Cryptogr., 2023)

Classifying pseudo-ovals, translation generalized quadrangles, and elation Laguerre planes of small order. - Giusy Monzillo; Tim Penttila; Alessandro Siciliano (Des. Codes Cryptogr., 2024)