by Kachur, B. K., Kukuruznyak, I. S., Nikiforov, B. V., Tarapurov, N. P., Umnov, V. D., Pogorelyi, V. P., Galaton, E. G., Kharchenko, B. V., Plokhikh, V. A.
Published in Metallurgist (New York) (01.09.1971)