Why Two Sexes?
  Evolutionary role of the separation into two sexes from a cyberneticist's point of view. [I translated this 1965 article from Russian "Nauka i Zhizn" (Science and Life) in 1988. In a popular form, the article puts forward several useful ideas not all of which even today are necessarily well known or widely accepted. Boris Lubachevsky, bdl@bell-labs.com ] 
Vigen A. Geodakian