@article{MET_1973__20_175570,
     author = {P.C. Bagga},
     title = {Two {Machine} {Scheduling} {Problem} when {Passing} {Allowed.}},
     journal = {Metrika},
     pages = {36--40},
     publisher = {mathdoc},
     volume = {20},
     year = {1973},
     zbl = {0252.90033},
     url = {http://geodesic.mathdoc.fr/item/MET_1973__20_175570/}
}