Alexopoulos, J., Lekkas, S., & Papadopoulos, T. (1999).
The pre-Pleistocene structure investigation of Manteinia basin (Arkadia-Peloponnesus).
5th Congress of Hellenic Geographical Society. presented at the 11-13 November, Athens, Greece.
.pdf Alexopoulos, J., Lekkas, S., & Papadopoulos, T. (1999).
Palaeogeographical evolution of north Tripolis plateau, from upper Pleistocene.
5th Congress of Hellenic Geographical Society. presented at the 11-13 November, Athens, Greece.
.pdf Alexopoulos, J., Lekkas, S., & Papadopoulos, T. (1999).
Morfotectonic evolution of Saga-Nestani basin (Arkadia- Peloponnesus).
5th Congress of Hellenic Geographical Society. presented at the 11-13 November, Athens, Greece.
.pdf Lekkas, S., Alexopoulos, J., & Papadopoulos, T. (1999).
Hydrological investigations of Mantineia area (Arkadia-Peloponnesus), with the contribution of geophysical investigations.
5th Congress of Hellenic Hydrological Society. presented at the 12-14 November, Nicosia, Cyprus.
.pdf Mariolakos, I., Alexopoulos, J., Papadopoulos, T., & Fountoulis, I. (1999).
Geomorphological structure investigation of Poliani polje (Messinia-Peloponnesus), with the contribution of geophysical investigations.
5th Congress of Hellenic Geographical Society. presented at the 11-13 November, Athens, Greece.
.pdf Papadopoulos, T., & Alexopoulos, J. (1999).
Combined geophysical methods for cavity detection in highly inhomogeneous material over karstic basement. A case history.
5th Meeting of the Environmental and Engineering Geophysical Society (EEGS European). presented at the September 6-9, Budapest, Hungary.
.pdf 
