Izvestiya of Saratov University.
Mathematics. Mechanics. Informatics
ISSN 1816-9791 (Print)
ISSN 2541-9005 (Online)

ryangmyongguk

ryangmyongguk's picture
Lastname: 
Ryang
First name: 
Myong Guk
Sex: 
Male
Organization: 
City: 
Pyongyang
Country: 
the Democratic People’s Republic of Korea