@article{DCG_1991__6_4_131150,
     author = {R. Kopperman and P.R. Meyer and R.G. Wilson},
     title = {A {Jordan} {Surface} {Theorem} for {Three-Dimensional} {Digital} {Spaces.}},
     journal = {Discrete & computational geometry},
     pages = {155--162},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1991},
     zbl = {0738.68086},
     url = {http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131150/}
}