"A first course in differential equations" by Dennis G. Zill "Introduction to Algorithms" by Cormen "Distributed Computing Through Combinatorial Topology" by

"A first course in differential equations" by Dennis G. Zill "Introduction to Algorithms" by Cormen "Distributed Computing Through Combinatorial Topology" by Kozlov, Herlihy & Rajsbaum "Practical UNIX programming" by A. Robbins