@article{BAG_1987__25_138385,
     author = {S. Krotoszynski},
     title = {Covering a plane convex body with five smaller homothetical copies},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {171--176},
     publisher = {mathdoc},
     volume = {25},
     year = {1987},
     zbl = {0619.52003},
     url = {http://geodesic.mathdoc.fr/item/BAG_1987__25_138385/}
}