@inproceedings{28ff0f8b125b44c89428ccb2e64b567c,
title = "Note on a theorem of Wik",
author = "A. Blokhuis and K.A. Post and {Pul, van}, C.L.M.",
year = "1987",
language = "English",
isbn = "0-444-87933-1",
series = "Colloquia Mathematica Societatis J{\'a}nos Bolyai",
publisher = "North-Holland Publishing Company",
pages = "85--88",
editor = "K. B{\"o}r{\"o}czky and {Fejes T{\'o}th}, G.",
booktitle = "Intuitive Geometry (Proceedings International Conference, Si{\'o}fok, Hungary, 1985)",
address = "Netherlands",
}