@article{10_37236_1037,
     author = {Christine T. Cheng},
     title = {On computing the distinguishing numbers of trees and forests},
     journal = {The electronic journal of combinatorics},
     year = {2006},
     volume = {13},
     doi = {10.37236/1037},
     zbl = {1080.05081},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1037/}
}