Quantization of midisuperspace models. Barbero G., J.Fernando, Villaseñor, Eduardo J.S. (2010) Living Reviews in Relativity [electronic only]
Quasilinear differential equations in exterior domains with nonlinear boundary conditions and application. Motreanu, Dumitru, Tarfulea, Nicolae (2009) Electronic Journal of Differential Equations (EJDE) [electronic only]
Quasi-local energy-momentum and angular momentum in general relativity. Szabados, László (2009) Living Reviews in Relativity [electronic only]