@article{02221796,
title = {Extending arcs: an elementary proof.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {12},
year = {2005},
zbl = {1082.51004},
language = {en},
url = {http://dml.mathdoc.fr/item/02221796}
}
Alderson, T. Extending arcs: an elementary proof.. The Electronic Journal of Combinatorics [electronic only], Tome 12 (2005) . http://gdmltest.u-ga.fr/item/02221796/