Minimum Cost Homomorphism Dichotomy for Locally In-Semicomplete Digraphs.

Arvind Gupta Mehdi Karimi Eun Jung Kim Arash Rafiey Minimum Cost Homomorphism Dichotomy for Locally In-Semicomplete Digraphs. 374-383 2008 COCOA http://dx.doi.org/10.1007/978-3-540-85097-7_35 conf/cocoa/2008 db/conf/cocoa/cocoa2008.html#GuptaKKR08