%0 Journal Article %T Groups and clusters detection on DPOSS catalogs %A E. Puddu %A E. De Filippis %A V. Strazzullo %A S. Andreon %A G. Longo %A R. Gal %A S. Djorgovski %A R. Scaramella %J Physics %D 2000 %I arXiv %X We discuss the implementation and validation of a procedure aimed to detect groups and clusters of galaxies in DPOSS catalogs. %U http://arxiv.org/abs/astro-ph/0009163v1