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when toggle format what by license comment
Nov 15, 2013 at 19:21 comment added Mariano Suárez-Álvarez @Prawem_Kaduka, well, he had the paper ready since 1973! :-)
Nov 14, 2013 at 22:32 vote accept Prawem_Kaduka
Nov 14, 2013 at 22:09 history answered Bill Johnson CC BY-SA 3.0