Alejo Mesa
Vladimir E. E. Gokhman
Juan Hector Hunziker
Viktor Nikolaevich Orlov
I. V. Kartavt͡seva
Nobel Symposium (23d 1972 Stockholm)
Raymond Alexandre Turpin
Nobel Symposium (23rd 1972 Stockholm)
Dietrich Goepfert
Nikolai P. Kandul
Nobel Symposium Stockholm 1972.
Thomas E. Denton
Gary L. Worthen
Kurt Benirschke
Paris Conference (1971): Standardization in Human Cytogenetics.
Simpozium po kariosistematike bespozvonochnykh zhivotnykh (1st Leningrad 1976)
Raymond Turpin
Conference on Comparative Mammalian Cytogenetics (1968 Dartmouth Medical School)
Milan Šimák
Gordon Howard Valentine