TY  - JOUR
AU  - T. Alderson
TI  - Extending arcs: an elementary proof
JO  - The electronic journal of combinatorics
PY  - 2005
VL  - 12
UR  - http://geodesic.mathdoc.fr/articles/10.37236/1973/
DO  - 10.37236/1973
ID  - 10_37236_1973
ER  -