@InProceedings{l08-p555-567, AUTHOR = {Feodor~F. Dragan and Chenyu Yan and Yang Xiang}, TITLE = {Collective Additive Tree Spanners of Homogeneously Orderable Graphs}, YEAR = 2008, BOOKTITLE = {Proc.~of the 8th Latin American Symposium on Theoretical Informatics (LATIN'08)}, ADDRESS = {B\'uzios, Brazil}, PAGES = {555--567}, KEYWORDS = {}}