%0 Journal Article %A Seaman, Walter %T The third Betti number of a positively pinched riemannian six manifold %J Annales de l'Institut Fourier %D 1986 %P 83-92 %V 36 %N 2 %I Institut Fourier %C Grenoble %U http://www.numdam.org/articles/10.5802/aif.1049/ %R 10.5802/aif.1049 %G en %F AIF_1986__36_2_83_0