$a Kp. Spectroscopic astrophysics : an assessment of the contributions of Otto Struve / ed. by G. H. Herbig. - Berkeley, 1970.
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$a Non-stable stars : International Astronomical Union Symposium No. 3, held in Dublin, 1 September 1955 / ed. by George H. Herbig. - Cambridge, 1957. $b (Lick Observatory, University of California)