2014-04-21 Sigmar Polke "Alibis" 1963-2010 at the MUSEUM of MODERN ART - YouTube (Part I)http://youtu.be/F_jEzpQJygw (Part II)http://youtu.be/8F8Q0U00tGA ◇ Alibis: Sigmar Polke 1963-2010 - MoMA http://www.moma.org/visit/calendar/exhibitions/1407 http://press.moma.org/2013/07/alibis-sigmar-polke-1963-2010/