Appendix A is only available in electronic form at http://www.aanda.org

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In fact, both classes of thermal pulse were previously encountered, but not explicitly labelled, by Schönberner (1979).

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... (2006 July)

There is only one citation in SIMBAD from before 1960: Hoffmeister's (1944) list of 171 new variables.

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... us

The authors have contacted two coauthors of Langer et al. (Kraft and Anderson) and the principal author of Cohen & Phillips (1980), who also had access to these data. Detailed records of the original work can no longer be located. Although the original plates should still be in the Lick plate archive, their extraction and analysis lie beyond our current resources.

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