The Hamilton circuit problem on grids Foto Afrati — 1994 RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
The complexity of the travelling repairman problem Foto Afrati; Stavros Cosmadakis; Christos H. Papadimitriou; George Papageorgiou; Nadia Papakostantinou — 1986 RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications