Search results for: Ryo Takahashi
Acta Mathematica Vietnamica > 2019 > 44 > 1 > 207-212
Acta Mathematica Vietnamica > 2015 > 40 > 1 > 197-203
Acta Mathematica Vietnamica > 2019 > 44 > 1 > 207-212
Acta Mathematica Vietnamica > 2015 > 40 > 1 > 197-203