Thomas Erlebach Aris Pagourtzis Katerina Potika Stamatis Stefanakos Resource Allocation Problems in Multifiber WDM Tree Networks. 218-229 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2880&spage=218 2003 conf/wg/2003 WG db/conf/wg/wg2003.html#ErlebachPPS03