Journal of nonlinear mathematical physics.

v.5no.3(1998)(08), v.5no.4(1998)(11), v.6no.1(1999)(02), v.6no.2(1999)(05), v.6no.3(1999)(08), v.6no.4(1999)(11), v.7no.1(2000)(02), v.7no.2(2000)(05), v.7no.3(2000)(08), v.7no.4(2000)(11), v.8no.1(2001)(02), v.8no.2(2001)(05), v.8no.3(2001)(08), v.8no.4(2001)(11), v.9no.1(2002)(02), v.9no.2(2002)(05), v.9no.3(2002)(08), v.9no.4(2002)(11), v.10no.1(2003)(02), v.10no.2(2003)(05), v.10no.3(2003)(08), v.10no.4(2003)(11), v.11no.1(2004)(02), v.11no.2(2004)(05), v.11no.3(2004)(08), v.11no.4(2004)(11), v.12no.1(2005)(02), v.12no.2(2005)(05), v.12no.3(2005)(08), v.12no.4(2005)(11), v.13no.1/4(2006)