Views from the same IP addresses are counted only if they have been requested with a delay more than 2 hours.
For 2021 year:Director: Sergei V. Ivanov
26 Polytekhnicheskaya, Saint Petersburg 194021, Russian Federation
Fax: +7 (812) 297 1017
Phone: +7 (812) 297 2245
E-mail: post@mail.ioffe.ru