On a geometric property of perfect graphs. - Leszek S. Zaremba; S. Perz (Comb., 1982)

Perfect graphs and norms. - Leszek S. Zaremba (Math. Program., 1991)

Optimal portfolio choice under a liability constraint. - Leszek S. Zaremba; Wlodzimierz H. Smolenski (Ann. Oper. Res., 2000)