Fernando de Felice is Professor of Theoretical Physics at the University of Padova, Italy. He has significant research experience in the subject of general relativity at institutions in the USA, Canada, the UK, Japan and Brazil. He was awarded the Volterra Medal by the Accademia dei Lincei in 2005.
Donato Bini is a Researcher of the Italian Research Council (CNR) at the Istituto per le Applicazioni del Calcolo 'M. Picone' (IAC), Rome. His research interests include space-time splitting techniques in general relativity.