Reasons for prolonged stay in Kiev and the resulting problem with getting in time a medical certificate for the trip abroad

Request to prolong the period of business assignment to Kiev because of the delay with the page-proof

in reply to the memo by M.Schwartzman - four remarks on the essence of the problem, and general belief that all the difficulties arizing during the project implementation can bee overpassed

phone mumbers of the authors, documents inventory, etc.

for the staff of Ershov's and Pottosin's laboratories