@article{10_4064_am_13_3_339_345,
     author = {J. Grabowski and M. M. Sys{\l}o},
     title = {On a machine sequencing problem {(I)}},
     journal = {Applicationes Mathematicae},
     pages = {339--345},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {1972},
     doi = {10.4064/am-13-3-339-345},
     zbl = {0259.90028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-13-3-339-345/}
}