@article{SMJ2_2000_26_2_a6,
     author = {Petrogradsky, V.},
     title = {Exponents of {Subvarieties} of {Upper} {Triangular} {Matrices} over {Arbitrary} {Fields} are {Integral}},
     journal = {Serdica Mathematical Journal},
     pages = {167--176},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2000_26_2_a6/}
}