TY  - JOUR
AU  - Frank Van Bussel
TI  - Relaxed graceful labellings of trees
JO  - The electronic journal of combinatorics
PY  - 2002
VL  - 9
UR  - http://geodesic.mathdoc.fr/articles/10.37236/1621/
DO  - 10.37236/1621
ID  - 10_37236_1621
ER  -