![Ioannis ANTONIADIS | Medical Doctor | Doctor of Medicine | Hygeia Hospital, Athens | Department of Neurosurgery | Research profile Ioannis ANTONIADIS | Medical Doctor | Doctor of Medicine | Hygeia Hospital, Athens | Department of Neurosurgery | Research profile](https://i1.rgstatic.net/ii/profile.image/553016340500481-1508860778961_Q512/Ioannis-Antoniadis-2.jpg)
Ioannis ANTONIADIS | Medical Doctor | Doctor of Medicine | Hygeia Hospital, Athens | Department of Neurosurgery | Research profile
![Ioannis Antoniadis, President of the Greek Stone Group International (SGI), was designated „Master of Stone“ Ioannis Antoniadis, President of the Greek Stone Group International (SGI), was designated „Master of Stone“](https://www.stone-ideas.com/wordpress/wp-content/uploads/2017/11/peoIoannis-Antoniadis_Marmomac17-1.jpg)
Ioannis Antoniadis, President of the Greek Stone Group International (SGI), was designated „Master of Stone“
![Ioannis ANTONIADES | Special Teaching Fellow | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Physics | Research profile Ioannis ANTONIADES | Special Teaching Fellow | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Physics | Research profile](https://i1.rgstatic.net/ii/profile.image/685251357577225-1540388063779_Q512/Ioannis-Antoniades.jpg)
Ioannis ANTONIADES | Special Teaching Fellow | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Physics | Research profile
![Christian ROLF | Senior Researcher (retired since the first of October 2021) | PhD | Leibniz Institute for Applied Geophysics, Hannover | LIAG | Rock Physics & Borehole Geophysics; (S5) | Research profile Christian ROLF | Senior Researcher (retired since the first of October 2021) | PhD | Leibniz Institute for Applied Geophysics, Hannover | LIAG | Rock Physics & Borehole Geophysics; (S5) | Research profile](https://i1.rgstatic.net/ii/profile.image/639864408121345-1529566971786_Q512/Christian-Rolf-2.jpg)