He has more than 160 publications, out of which more than 95 refereed publications (of which 12 letters). His research topics include: Gravitational-wave astronomy; Compact stars as sources of gravitational waves; Equilibrium and instabilities of rotating relativistic stars; Nonlinear oscillations of relativistic stars; MHD oscillations in relativistic models of magnetized neutron stars; Numerical relativity; Interaction of gravitational waves with plasma; and Relativistic accretion disks. His publications have received a total of more than 7300 citations with an h-index of 44.

He is the author of a highly cited review article in Living Reviews in Relativity and co-author of a new book, entitled “Rotating Relativistic Stars”, in the highly-acclaimed series Cambridge Monographs on Mathematical Physics. He has presented more than 35 invited talks at international conferences and he gave a series of invited lectures at 9 international summer or winter schools for advanced graduate students and post-docs on relativistic astrophysics and numerical relativity. He was P.I. in 10 international or bilateral research grants (including two Marie-Curie post-doctoral fellowships and an ESA Prodex grant) and participated in more than 14 other research grants.