@article{JSFU_2014_7_4_a6,
     author = {Leonid N. Krivonosov and Vyacheslav A. Lukyanov},
     title = {Solving {Yang{\textendash}Mills} equations for 4-metrics of {Petrov} types {II,} {N,} {III}},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {472--488},
     year = {2014},
     volume = {7},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2014_7_4_a6/}
}