@article{AIHPA_1973__18_2_121_0,
     author = {El-Kholy, A. A. and Sexl, R. U. and Urbantke, H. K.},
     title = {On the so-called {{\textquotedblleft}Palatini} method{\textquotedblright} of variation in covariant gravitational theories},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {121--135},
     publisher = {Gauthier-Villars},
     volume = {18},
     number = {2},
     year = {1973},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AIHPA_1973__18_2_121_0/}
}