* Zappalà, Vincenzo; Cellino, Alberto; Farinella, Paolo; and Knežević, Zoran; "Asteroid families I - Identification by hierarchical clustering and reliability assessment", "Astronomical Journal", Vol.
* Винченцо Цаппала; Cellino, Alberto; Farinella, Paolo; and Knežević, Zoran; «Asteroid families I — Identification by hierarchical clustering and reliability assessment», "Astronomical Journal", Vol.