Vietnam Journal of Mathematics
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 403-415
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 229-238
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 215-228
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 283-295
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 357-384
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 323-341
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 297-321
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 207-213
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 385-401
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 439-458
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 195-205
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 471-486
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 417-437
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 257-281
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 459-469
Vietnam Journal of Mathematics > 2015 > 43 > 2 > 487-500