[1] C. Calude, I. Chiţescu: 
Random strings according to A. N. Kolmogorov and P. Martin-Löf - Classical approach. Found. Control Engng. (to appear). 
MR 0691575 
[2] A. N. Kolmogorov: 
Three approaches to the quantitative definition of information. Problems Inform. Transmission 1 (1965), 1 - 7. 
MR 0243922 
[3] M. Machtey, P. Young: 
An Introduction to General Theory of Algorithms. North-Holland, New York 1978. 
MR 0483344 
[4] P. Martin-Löf: 
The definition of random sequences. Inform. and Control 19 (1966), 602-619. 
MR 0223179 
[5] H. Rogers, Jr.: 
The Theory of Recursive Functions and Effective Computability. McGraw-Hill, New York 1967. 
MR 0224462 
[6] A. Zvonkin, L. Levin: 
The complexity of finite objects and the development of the concepts of information and randomness by means of the theory of algorithms. (in Russian). Uspechi Mat. Nauk 156 (1970), 85-127. 
MR 0307889 | 
Zbl 0222.02027