Large Scale Morphological Segregation in Optically Selected Galaxy   Redshift Catalogs
  We present the results of an exhaustive analysis of the morphological segregation of galaxies in the CfA and SSRS catalogs through the scaling formalism. Morphological segregation between ellipticals and spirals has been detected at scales up to 15-20 h$^{-1}$ Mpc in the CfA catalog, and up to 20-30 h$^{-1}$ Mpc in the SSRS catalog. Moreover, it is present not only in the densest areas of the galaxy distribution, but also in zones of moderate density. 
R. Dominguez-Tenreiro, A. Campos, M.A. G\'omez-Flechoso and G. Yepes