%0 Journal Article %A Hizuru Yamagishi %T On the solutions of certain diagonal quadratic equations and Lang's conjecture %J Acta Arithmetica %D 2003 %P 159-168 %V 109 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa109-2-5/ %R 10.4064/aa109-2-5 %G en %F 10_4064_aa109_2_5