http://en.wikipedia.org/wiki/El_Lissitzky http://www.incorm.eu/lissitzky.html http://vanabbe.nl/lissitzky/nederlands/ Some works by El Lissitzky About 2 Squares by El Lissitzky, 1922 [1] http://www.getty.edu/research/tools/guides_bibliographies/lissitzky/index2.html
