@article{JAC_2011__33_4_a2,
     author = {Pankov, Mark},
     title = {Isometric embeddings of {Johnson} graphs in {Grassmann} graphs},
     journal = {Journal of Algebraic Combinatorics},
     pages = {555--570},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2011__33_4_a2/}
}