TY - JOUR AU - Sharma, Bhu Dev AU - Garg, Asha TI - Characterization and lower bounds for additive charges for heterogeneous questionnaires JO - RAIRO. Informatique théorique PY - 1979 SP - 383 EP - 393 VL - 13 IS - 4 PB - EDP-Sciences UR - http://archive.numdam.org/item/ITA_1979__13_4_383_0/ LA - en ID - ITA_1979__13_4_383_0 ER -