@article{VMUMM_2000_6_a0,
     author = {A. Yu. Neronov},
     title = {Symmetries of {Einstein} equations. {An} approach using the formal theory of {Lie} pseudogroups},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {3--8},
     publisher = {mathdoc},
     number = {6},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2000_6_a0/}
}