Le nombre de posets à isomorphie près ayant 12 èlèments. - Claude Chaunier; Nik Lygeros (Theor. Comput. Sci., 1994)

On Minimal Strings Containing the Elements of Sn by Decimation. - Robert Erra; Nik Lygeros; Nigel Stewart (DM-CCG, 2001)

Ten consecutive primes in arithmetic progression. - Harvey Dubner; Tony Forbes; Nik Lygeros; Michel Mizony; Harry Nelson; Paul Zimmermann (Math. Comput., 2002)

Enumeration and 3D representation of the stereo-isomers of alkane molecules. - Nik Lygeros; Paul-Valère Marchand; Marc Massot (J. Symb. Comput., 2005)