00329nam a2200121Ia 4500082002500000100002400025245005600049260003400105300001600139490004200155500000500197700000500202  a519.5024574bR492.DP  aRicciardi, Luigi M.  aDiffusion processes and related topics in biologyb  aBerlinbSpringer-Verlagc1977  a200p. Index  aLecture notes in Biomathematics v 14  a  a