%0 Journal Article %A Fernando Luque-Vásquez %A Onésimo Hernández-Lerma %T Semi-Markov control models with average costs %J Applicationes Mathematicae %D 1999 %P 315-331 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-26-3-315-331/ %R 10.4064/am-26-3-315-331 %G en %F 10_4064_am_26_3_315_331