The paper to be cited is the last one concerning VEGA:

Pedretti A., Mazzolari A., Gervasoni S., Fumagalli L., Vistoli G. "The VEGA suite of programs: an versatile platform for cheminformatics and drug design projects". Bioinformatics, Vol. 37 (8), 1174–1175, 2021.

DOI: 10.1093/bioinformatics/btaa774

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