C.D.S. - SIMBAD4 rel 1.8 - 2024.05.20CEST16:14:27 Reference query: 1990Natur.344..381A (1 found) ---------------------------------------------- 1990Natur.344..381A 10.1038/344381a0 Nature, 344, 381-382 (1990) Lumps in planetary nebulae. ALCOCK C. -Simbad objects: 1