C language tutorial reference E-books & research papers

• [ANSI 89] American National Standards Institute., American National Standard for Information  Programming Language C, X3 159-1989
• [Kernighan 78] B. W. Kernighan and D. M. Ritchie, The C Programming Language, Prentice-Hall: Englewood Cliffs, NJ, 1978. Second edition, 1988.
• [Thinking 90] C* Programming Guide, Thinking Machines Corp.: Cambridge Mass., 1990.