Mathematical Olympiads 1998 -1999: Problems and Solutions from Around the World
International Mathematics Tournament Of The Towns. Book 5: 1997-2002
Inequalities
Contests in Higher Mathematics: Miklós Schweitzer Competitions 1962–1991
Problems and Solutions for Complex Analysis
Asymptotic Methods in the Theory of Stochastic Differential Equations
Studies in Logic and the Foundations of Mathematics. Volume 145
Second-Order Sturm-Liouville Difference Equations and Orthogonal Polynomials
Ordinary Differential Equations
Schaum's Outline of Group Theory
The USSR Olympiad Problem Book: Selected Problems and Theorems of Elementary Mathematics
