@article{JLT_2017_27_2_JLT_2017_27_2_a7,
     author = {B. N. Chary and S. S. Kannan},
     title = {Rigidity of {Bott-Samelson-Demazure-Hansen} {Variety} for {PSp(2n,} {C)}},
     journal = {Journal of Lie theory},
     pages = {435--468},
     year = {2017},
     volume = {27},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JLT_2017_27_2_JLT_2017_27_2_a7/}
}