Recent Field Observations Indicating an Earth System in Critical Condition Before the Occurrence of a Significant Earthquake. - Stelios M. Potirakis; Yiannis F. Contoyiannis; Konstantinos Eftaxias; Grigorios E. Koulouras; Constantine Nomicos (IEEE Geosci. Remote. Sens. Lett., 2015)

On Possible Electromagnetic Precursors to a Significant Earthquake (Mw = 6.3) Occurred in Lesvos (Greece) on 12 June 2017. - Stelios M. Potirakis; Alexander Schekotov; Yiannis F. Contoyiannis; Georgios Balasis; Grigorios E. Koulouras; Nikolaos S. Melis; Adamantia Zoe Boutsi; Masashi Hayakawa; Konstantinos Eftaxias; Constantinos Nomicos (Entropy, 2019)

Statistical and Criticality Analysis of the Lower Ionosphere Prior to the 30 October 2020 Samos (Greece) Earthquake (M6.9), Based on VLF Electromagnetic Propagation Data as Recorded by a New VLF/LF Receiver Installed in Athens (Greece). - Dimitrios Z. Politis; Stelios M. Potirakis; Yiannis F. Contoyiannis; Sagardweep Biswas; Sudipta Sasmal; Masashi Hayakawa (Entropy, 2021)