Κώστας Ν. Κωνσταντινίδης (Kosta N. Constantinides)
xxii + 538 (approximate, based on standard citations of this volume)
The citation you are looking for refers to the proceedings of a significant scientific symposium held in Ioannina. The complete bibliographical information for the book is:
Μεσαιωνική Ήπειρος. Η νεώτερη έρευνα. Εξελίξεις και προοπτικές