Open Mathematics
Open Mathematics > 2013 > 11 > 12 > 2203-2214
Open Mathematics > 2017 > 15 > 1 > 77-91
Open Mathematics > 2017 > 15 > 1 > 433-445
Open Mathematics > 2017 > 15 > 1 > 1048-1062
Open Mathematics > 2013 > 11 > 12 > 2203-2214
Open Mathematics > 2017 > 15 > 1 > 77-91
Open Mathematics > 2017 > 15 > 1 > 433-445
Open Mathematics > 2017 > 15 > 1 > 1048-1062