Citation: J. Carminati et S. Cyganowski, SHEAR-FREE PERFECT FLUIDS IN GENERAL-RELATIVITY .4. PETROV TYPE-III SPACETIMES, Classical and quantum gravity, 14(5), 1997, pp. 1167-1181
Citation: J. Carminati et S. Cyganowski, SHEAR-FREE PERFECT FLUIDS IN GENERAL-RELATIVITY .3. PETROV TYPE-III SPACETIMES, Classical and quantum gravity, 13(7), 1996, pp. 1805-1817