St. Petersburg State Polytechnic University, 29, Polytehnicheskaya ul., St Petersburg, 195251, Russia.|St. Petersburg State Polytechnic University, 29, Polytehnicheskaya ul., St Petersburg, 195251, Russia.|St. Petersburg State Polytechnic University, 29, Polytehnicheskaya ul., St Petersburg, 195251, Russia.|St. Petersburg State Polytechnic University, 29, Polytehnicheskaya ul., St Petersburg, 195251, Russia.|St. Petersburg State Polytechnic University, 29, Polytehnicheskaya ul., St Petersburg, 195251, Russia.