@article{MAN_1970__184_161919,
     author = {J.J. Sch\"affer},
     title = {Minimum {Girth} of {Spheres.}},
     journal = {Mathematische Annalen},
     pages = {169--171},
     publisher = {mathdoc},
     volume = {184},
     year = {1970},
     zbl = {0176.10803},
     url = {http://geodesic.mathdoc.fr/item/MAN_1970__184_161919/}
}