Media type: Electronic Journal Title: Izvestija vysšich učebnych zavedenij Matematika / Kazanskij (privolžskij) federalʹnyj universitet imprint: Kazan: Kazanskij federalʹnyj universitet, [1997?]- Publication information: 419, no 4 (1997) [?]-551, no 4 (2008); 2008, no 5- Language: Russian ISSN: 2076-4626 Keywords: Zeitschrift Origination: Footnote: In kyrillischer Schrift Access State: Open Access