@article{CM_1992__82_1_57_0,
     author = {Changat, M. and Vijayakumar, A.},
     title = {On order and metric convexities in $Z^n$},
     journal = {Compositio Mathematica},
     pages = {57--65},
     publisher = {Kluwer Academic Publishers},
     volume = {82},
     number = {1},
     year = {1992},
     mrnumber = {1154161},
     zbl = {0758.52010},
     language = {en},
     url = {http://www.numdam.org/item/CM_1992__82_1_57_0/}
}