@article{DCG_1991__6_4_131139,
     author = {M. Lassak and J. Zhang},
     title = {An {On-Line} {Potato-Sack} {Theorem.}},
     journal = {Discrete & computational geometry},
     pages = {1--8},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1991},
     zbl = {0727.52004},
     url = {http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131139/}
}