Spin waves in a semi‐infinite Heisenberg ferromagnet with an impurity layer
1966 ◽
Vol 89
(1)
◽
pp. 111-118
◽
1976 ◽
Vol 26
(3)
◽
pp. 263-269
◽
1967 ◽
Vol 5
(9)
◽
pp. l-li
◽