Col Reference --- --------- R1 Lindoff U. 1968, Ark. Astr. 5, 63 R2 Andersen T.B., Reiz A. 1983, Astron. Astrophys. Suppl. 53, 214 R3 Fernie Back to the form
--- ---------
R1 Lindoff U. 1968, Ark. Astr. 5, 63
R2 Andersen T.B., Reiz A. 1983, Astron. Astrophys. Suppl. 53, 214
R3 Fernie