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Consortium of Swiss Academic Libraries

Confirmation of previous ground-based Cepheid P-L zero-points using Hipparcos trigonometric parallaxes

Sandage, Allan ; Tammann, G. A.

In: Monthly Notices of the Royal Astronomical Society, 1998, vol. 293, no. 1, p. L23-L26

Consortium of Swiss Academic Libraries

Allan Sandage and the distance scale

Tammann, G. A. ; Reindl, B.

In: Proceedings of the International Astronomical Union, 2012, vol. 8, no. S289, p. 13-25