TY - JOUR AU - Aczél, J. AU - Daróczy, Z. TI - A mixed theory of information. I : symmetric, recursive and measurable entropies of randomized systems of events JO - RAIRO. Informatique théorique PY - 1978 SP - 149 EP - 155 VL - 12 IS - 2 PB - EDP-Sciences UR - http://www.numdam.org/item/ITA_1978__12_2_149_0/ LA - en ID - ITA_1978__12_2_149_0 ER -