@article{ITA_1979__13_4_383_0,
     author = {Sharma, Bhu Dev and Garg, Asha},
     title = {Characterization and lower bounds for additive charges for heterogeneous questionnaires},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {383--393},
     publisher = {EDP-Sciences},
     volume = {13},
     number = {4},
     year = {1979},
     mrnumber = {556960},
     zbl = {0424.94007},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1979__13_4_383_0/}
}