Explore Books on
recursion

Fractals, chaos, power laws

By M. R. Schroeder

Introduction to algorithms

By Udi Manber

Ŏnŏ wa inji ŭi sunhwansŏng kwa kiwŏn

By Suk-hwan Cho

Fundamentals of Computer Programming with CSharp Free Book (by Nakov & Co.)

By Svetlin Nakov