@article{DBLP:journals/jct/Numata90,
author = {Minoru Numata},
title = {A characterization of Grassmann and Johnson graphs},
journal = {J. Comb. Theory, Ser. B},
volume = {48},
number = {2},
year = {1990},
pages = {178-190},
ee = {http://dx.doi.org/10.1016/0095-8956(90)90116-H},
bibsource = {DBLP, http://dblp.uni-trier.de}
}