@article{AM2_1987__33_137205,
     author = {S. Lins and B. Richter and H. Shank},
     title = {The {Gauss} code problem off the plane.},
     journal = {Aequationes mathematicae},
     pages = {81--95},
     publisher = {mathdoc},
     volume = {33},
     year = {1987},
     zbl = {0591.05024},
     url = {http://geodesic.mathdoc.fr/item/AM2_1987__33_137205/}
}