@article{1178242692, author = {Yabuta, K\^oz\^o}, title = {Remarks on extremum problems in $H^{1}$}, journal = {Tohoku Math. J. (2)}, volume = {23}, number = {4}, year = {1971}, pages = { 129-137}, language = {en}, url = {http://dml.mathdoc.fr/item/1178242692} }
Yabuta, Kôzô. Remarks on extremum problems in $H^{1}$. Tohoku Math. J. (2), Tome 23 (1971) no. 4, pp. 129-137. http://gdmltest.u-ga.fr/item/1178242692/