Concrete mathematics
Mathematics for the analysis of algorithms
Selected Papers on Design of Algorithms
The art of computer programming (Vol. 2. Seminumerical algorithms)
The art of computer programming (Vol. 1. Fundamental algorithms)
The art of computer programming (vol. 2 Seminumerical Algorithms)
The art of computer programming (vol. 1 Fundаmental algorithms)
The Metafontbook
The TEXbook