@article{DAN_1989_307_2_a3,
     author = {D. I. Panyushev},
     title = {Complexity and rank of homogeneous spaces and the co-isotropy},
     journal = {Doklady Akademii Nauk},
     pages = {276--279},
     publisher = {mathdoc},
     volume = {307},
     number = {2},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_2_a3/}
}