1. Integration of the Einstein equations by the inverse scattering problem technique and the calculation of the exact soliton solutions;Belinski;Sov. Phys. JETP,1978
2. Stationary gravitational solutions with axial symmetry;Belinski;Sov. Phys. JETP,1979
3. Complementi alle ricerche sulle superficie isoterme;Bianchi;Annali di Matematica,1906