Roberts, Fred S..
Encyclopedia of Mathematics and its Applications Vol-7 / - First Ed.. / - London : Addison-Wesley Publishing Company. - p.420,xii :
0-201-13506-x
BObSZ / L9
Encyclopedia of Mathematics and its Applications Vol-7 / - First Ed.. / - London : Addison-Wesley Publishing Company. - p.420,xii :
0-201-13506-x
BObSZ / L9