Zhengbing Bian Qian-Ping Gu Xiao Zhou Wavelength Assignment on Bounded Degree Trees of Rings. 73-80 2004 conf/icpads/2004 ICPADS http://doi.ieeecomputersociety.org/10.1109/ICPADS.2004.92 db/conf/icpads/icpads2004.html#BianGZ04