informing Ershov ofthe invitation to Minich and other German coputer science centers and suggesting to combine this trip with the visit to Markobersdorf Summer School

with official invitation

Official invitation from directors of Mathematics Institute of Munich Technical University (original text and Russian translation)

acknowledging receipt of materials and invitetion to the Summer School; will try to arrive one week ahead of the School beginning

Thanks for the received book, request to send an invitation for a one-month visit to Germany next year

The author is glad that Ershov acepted the invitation to lecture at Marktoberdorf Summer School and suggests the visit to the Technical University to give some lectures; enclosed is a copy of the English translation of "Andrei and the Monster"