@article{KYB_1997__33_6_a6,
     author = {Vlach, Milan and Zimmermann, Karel},
     title = {Optimal starting times for a class of single machine scheduling problems with earliness and tardiness penalties},
     journal = {Kybernetika},
     pages = {675--686},
     publisher = {mathdoc},
     volume = {33},
     number = {6},
     year = {1997},
     mrnumber = {1602380},
     zbl = {0908.90175},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1997__33_6_a6/}
}