Energy, entropy and mass scaling relations for elliptical galaxies. Towards a physical understanding of their photometric propertiesI. Márquez, G. B. Lima Neto, H. Capelato, F. Durret, B. Lanzoni and D. GerbalA&A, 379 3 (2001) 767-780DOI: https://doi.org/10.1051/0004-6361:20011370