In memoriam Julian Keilson (November 19, 1924 -- March 8, 1999). Syski, Ryszard — 1999 Journal of Applied Mathematics and Stochastic Analysis
Comments on a single server queue. Syski, Ryszard — 1995 Journal of Applied Mathematics and Stochastic Analysis
Lajos Takács and his work. Dshalalow, Jewgeni H.; Syski, Ryszard — 1994 Journal of Applied Mathematics and Stochastic Analysis