By Morton, N.S., Doyle, E.I.
By Galperin, E.I.
By Galperin, E.I., Nersesov, I.L., Galperina, R.M.
By Givargizov, E.I.
By Givargizov, E.I., Mel'nikova, A.M.
By Goodwin, T. W., Mercer, E.I.