@article{MS2_1977__40_166527,
     author = {Fr. Fabricius-Bjerre},
     title = {On a conjecture of {G.} {Bol.}},
     journal = {Mathematica Scandinavica},
     pages = {194--196},
     publisher = {mathdoc},
     volume = {40},
     year = {1977},
     zbl = {0373.53002},
     url = {http://geodesic.mathdoc.fr/item/MS2_1977__40_166527/}
}