@article{KYB_1970__6_6_a1, author = {Picard, C.-F.}, title = {Quasi-questionnaires, codes and {Huffman's} length}, journal = {Kybernetika}, pages = {--435}, publisher = {mathdoc}, volume = {06}, number = {6}, year = {1970}, mrnumber = {0284274}, zbl = {0215.30901}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KYB_1970__6_6_a1/} }