@techreport{kam1013,
 author = { P. A. Golovach, B. Lidick\'y, B. Martin, and D. Paulusma},
 title = {Finding vertex-surjective graph homomorphisms},
 institution = {KAM-DIMATIA Series},
 year = {2011},
 number = {1013},
 type = {prepublication}
}