Kozono Hideo, Sato Tokushi, Wadade Hidemitsu. Upper bound of the best constant of the Trudinger-Moser inequality and its application to the Gagliardo-Nirenberg inequality (Harmonic Analysis and Nonlinear Partial Differential Equations). RIMS Kokyuroku. 2004. 1401. 41-47
Kozono Hideo, Sato Tokushi, Wadade Hidemitsu. Upper bound of the best constant of the Trudinger-Moser inequality and its application to the Gagliardo-Nirenberg inequality (Variational Problems and Related Topics). RIMS Kokyuroku. 2004. 1405. 66-72