C.D.S. - SIMBAD4 rel 1.8 - 2024.05.14CEST17:35:12 Reference query: 1974Natur.249..429V (1 found) ---------------------------------------------- 1974Natur.249..429V 10.1038/249429a0 Nature, 249, 429 (1974) Shell flashes in planetary nebulae. VAN HORN H.M. and HANSEN C.J. -Simbad objects: 1