McGowan, I. R. ; Tipper, C. F. H. Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences.
246
(1958)
1244
- p.
64-77
,
1958
McGowan, I. R. ; Tipper, C. F. H. Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences.
246
(1958)
1244
- p.
52-63
,
1958