found: Mezei, A. Magyar kocka, avagy, Még mindig ilyen gazdagok vagyunk? c1984:p. 39 (Rubik Ernő; főisk. tanársegéd)
found: Wikipedia, 6 Jun. 2008(Ernő Rubik, born 13 Jul. 1944, Budapest, Hungary; an inventor, sculptor and professor of architecture)
found: britannica.com. November 4, 2020(Erno Rubik; born July 13, 1944, Budapest, Hungary; inventor of Rubik's Cube, a popular toy of the 1980s; Rubik studied sculpture at the Technical University in Budapest and architecture at the Academy of Applied Arts and Design, also in Budapest; while a professor of design at the academy, he pursued his hobby of building geometric model; following his cube's popularity, Rubik opened a studio to develop designs in 1984; among its products was another popular puzzle toy, Rubik's Magic)
