@article{CM_1989__72_1_115_0,
     author = {Zeinstra, Rein L.},
     title = {Some properties of positive superharmonic functions},
     journal = {Compositio Mathematica},
     pages = {115--120},
     publisher = {Kluwer Academic Publishers},
     volume = {72},
     number = {1},
     year = {1989},
     mrnumber = {1026331},
     zbl = {0706.31004},
     language = {en},
     url = {http://www.numdam.org/item/CM_1989__72_1_115_0/}
}