Applied Stochastic Models in Business and Industry (Appl. Stoch. Models Bus. Ind.) (20130101), 29, no.~6, 604-620. ISSN: 1524-1904 (print).eISSN: 1526-4025.
Applied Stochastic Models in Business and Industry (Appl. Stoch. Models Bus. Ind.) (20130101), 29, no.~6, 626-628. ISSN: 1524-1904 (print).eISSN: 1526-4025.