CHOWDHURY, Amor, BREZNIK, Gregor, VERDNIK, Klemen in PRIHAVEC, Bor, 2012, Customer identification and authentication procedure for online internet payments using mobile phones : United States Patent 8,099,077 B2, January 17, 2012 [na spletu]. 2012. Alexandria : #The #United States Patent and Trademark Office. [Dostopano 19 april 2025]. Pridobljeno s: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=8099077
