Heinz Zemanek DIXIT Algorizmi - His Background, his Personality, his Work, and his Influence. 1-81 1979 conf/ershov/1979 Algorithms in Modern Mathematics and Computer Science db/conf/ershov/ershov1979.html#Zemanek79 http://dx.doi.org/10.1007/3-540-11157-3_25