Khristoforov, Mikhail
Kleptsyn, Victor
Triestino, Michele
Funding for this research was provided by:
RF Government (11.G34.31.0026)
JSC ”Gazprom Neft”
Russian Foundation for Basic Research (13-01-00969-a)
CSF CAPES
Reseau France-Bresil in Mathematics
Japan Society for the Promotion of Science (24224002)
CAPES
Article History
Received: 22 October 2013
Accepted: 20 March 2016
First Online: 1 June 2016