Wei-Fan Wang. The ::::L::::(2, 1)-labelling of trees. Discrete Applied Mathematics, 154(3):598-603, 2006. [doi]
@article{Wang06:28,
title = {The ::::L::::(2, 1)-labelling of trees},
author = {Wei-Fan Wang},
year = {2006},
doi = {10.1016/j.dam.2005.09.007},
url = {http://dx.doi.org/10.1016/j.dam.2005.09.007},
researchr = {https://researchr.org/publication/Wang06%3A28},
cites = {0},
citedby = {0},
journal = {Discrete Applied Mathematics},
volume = {154},
number = {3},
pages = {598-603},
}