Mehdi Karimi, Arvind Gupta. Minimum Cost Homomorphism to Oriented Cycles with Some Loops. In Rod Downey, Prabhu Manyem, editors, Theory of Computing 2009, Fifteenth Computing: The Australasian Theory Symposium, CATS 2009, Wellington, New Zealand, January 2009. Volume 94 of CRPIT, pages 7-17, Australian Computer Society, 2009. [doi]
Abstract is missing.