%0 Journal Article %A Melzak, Z.A. %T An Isoperimetric Inequality for Tetrahedra %J Canadian mathematical bulletin %D 1966 %P 667-669 %V 9 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1966-080-0/ %R 10.4153/CMB-1966-080-0 %F 10_4153_CMB_1966_080_0