@article{AL_2012_51_4_a4,
     author = {K. N. Ponomarev},
     title = {Centroids of algebraic groups},
     journal = {Algebra i logika},
     pages = {496--523},
     publisher = {mathdoc},
     volume = {51},
     number = {4},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2012_51_4_a4/}
}