Francesc Comellas Margarida Mitjana Lata Narayanan Jaroslav Opatrny Optical Routing of Uniform Instances in Tori. 285-294 https://doi.org/10.1007/3-540-44612-5_24 2000 conf/mfcs/2000 MFCS db/conf/mfcs/mfcs2000.html#ComellasMNO00