%0 Journal Article %A Michel Waldschmidt %A Peter Bundschuh %T Irrationality results for theta functions by Gel'fond-Schneider's method %J Acta Arithmetica %D 1989 %P 289-307 %V 53 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-53-3-289-307/ %R 10.4064/aa-53-3-289-307 %G en %F 10_4064_aa_53_3_289_307