@article{MAN_1986__274_164128,
     author = {G. K. Sankaran},
     title = {Tsuchihashi's {Cusp} {Singularities} and {Automorphisms} of {Hilbert} {Modular} {Variety} {Cusps.}},
     journal = {Mathematische Annalen},
     pages = {691--698},
     publisher = {mathdoc},
     volume = {274},
     year = {1986},
     zbl = {0576.14037},
     url = {http://geodesic.mathdoc.fr/item/MAN_1986__274_164128/}
}