MG Meetings
The MG meetings were founded in 1975 by Remo Ruffini and Abdus Salam with the aim of reviewing developments in gravitation and general relativity with major emphasis on mathematical foundations and physical predictions.
The dedication to Marcel Grossmann celebrates the merging of the mathematical ideas of Gregorio Ricci-Curbastro and Tullio Levi-Civita with the physics world, made possible by the genius of Albert Einstein.
More info about Marcel Grossmann at this link:
http://www.gap-system.org/~history/Biographies/Grossmann.html