@article{RO_1977__11_1_103_0,
     author = {Nakagawa, T.},
     title = {Optimum preventive maintenance and repair limit policies maximizing the expected earning rate},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {103--108},
     publisher = {EDP-Sciences},
     volume = {11},
     number = {1},
     year = {1977},
     mrnumber = {452619},
     zbl = {0361.90027},
     language = {en},
     url = {http://archive.numdam.org/item/RO_1977__11_1_103_0/}
}