$a Kp. Group theoretical methods and their applications / A. Fässler, E. Stiefel. - Boston, 1992. $b (Professor at the Department of Mathematics, Eidgenössische Technische Hochschule, ETH, Zürich, Switzerland)
670
$a LCA online
670
$a Kp. Linejnaâ i regulârnaâ nebesnaâ mehanika : vozmuŝennaâ zadača dvuh tel, čislennye metody, kanoničeskaâ teoriâ / E. Štifel', G. Šejfele. - Moskva, 1975.