@article{DCG_1987__2_131023,
     author = {P. Schmitt},
     title = {...-Morphic {Sets} of {Prototiles.}},
     journal = {Discrete & computational geometry},
     pages = {271--296},
     publisher = {mathdoc},
     volume = {2},
     year = {1987},
     zbl = {0616.52014},
     url = {http://geodesic.mathdoc.fr/item/DCG_1987__2_131023/}
}