Combinational Logic Design 
References
Books:
- Digital Logic and Computer Design - M. Morris Mano. Pearson Education - Prentice Hall [Chapter 4, Page 116]
- Digital Principles Foundation of Circuit Design and Application - Arun Kumar Singh. New Age Publishers. [Chapter 4]
- The Art of Electronics - Paul Horowitz and Winfield Hill (1989). Cambridge University Press
- Modern Dictionary of Electronics - Rudolf F. Graf (1999). Newnes