N. Bollas

A cholesterol granuloma in the maxillary sinus: report of case.

F. Tzerbos, N. Kavantzas, A. Mavrogeorgis, 1994, Journal of oral and maxillofacial surgery.

Parotid Castleman's disease.

A. Karameris, J. Panayiotides, T. Tsilalis, 1998, Cytopathology.

Comparison of Sentinel-2 and UAV Multispectral Data for Use in Precision Agriculture: An Application from Northern Greece

Vassilios Polychronos, Eleni Kokinou, Nikolaos Bollas, 2021, Drones.