of Societe de Banque Suisse (Ershov wrote that he used this flyer as a napkin at "Kopernikus" restaurant

on 1988 International Zurich Seminar on Digital Communications

McDonald's

from SCG Minibar

to the Zurich Fedearal Technical School

for tobacco, music, record, and books shops

for Swissair passengers

inviting to the discussion of Andrei Tarkovsky's film "Sacrifice"

Tickets, receipts