N. Crainic

发表

M. Crainic, N. Crainic, 2003, math/0302192.

A. Marques, S. Cabral-Fonseca, J. Nunes, 2003 .

S. Bernad, A. Bosioc, E. Bernad, 2015 .

Nicolae Crainic, N. Crainic, 2005, J. Num. Math..

M. Crainic, N. Crainic, 2003, math/0302192.