Lithuanian Mathematical Journal
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 270-290
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 243-254
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 207-221
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 263-269
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 255-262
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 291-300
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 159-192
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 222-230
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 231-242
Lithuanian Mathematical Journal > 2015 > 55 > 2 > 193-206