%0 Journal Article %A Gopalan, M. N. %A Venkatachalam, P. %T Availability and reliability of a 2-unit 2-server system subject to preventive maintenance and repair %J RAIRO - Operations Research - Recherche Opérationnelle %D 1978 %P 85-92 %V 12 %N 1 %I EDP-Sciences %U http://www.numdam.org/item/RO_1978__12_1_85_0/ %G en %F RO_1978__12_1_85_0