Vietnam Journal of Mathematics
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 417-430
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 209-225
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 387-401
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 287-296
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 443-460
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 227-253
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 269-286
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 327-353
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 255-268
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 461-476
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 297-307
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 487-507
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 367-386
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 355-365
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 309-325
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 403-415
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 431-442
Vietnam Journal of Mathematics > 2019 > 47 > 2 > 477-485