The Nasa/ipac Extragalactic Database Helou, G. ; Madore, B. F. ; Bicay, M. D. ; Schmitz, M. ; Liang, J. Abstract Publication: Windows on Galaxies Pub Date: 1990 DOI: 10.1007/978-94-009-0543-6_15 Bibcode: 1990ASSL..160..109H