@article{YJOR_1991_1_2_a10,
     author = {Kun-Jen Chung},
     title = {Economically {Optimal} {C-Control} {Charts}},
     journal = {Yugoslav journal of operations research},
     pages = {235 },
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/YJOR_1991_1_2_a10/}
}