with Arieh Lev, Bases and decomposition numbers of finite groups. Arch. Math. (Basel) 58 (1992), no. 5, 417424. download.

with Arieh Lev, On h-bases and h-decompositions of the finite solvable and alternating groups. J. Number Theory 49 (1994), no. 3, 385391. download.

with Alexander Olevskii, Random homeomorphisms and Fourier expansions. Geom. Funct. Anal. 8 (1998), no. 6, 10161042. download.