Geodesic
Upper bounds on homological dimensions of pullback rings
Zapiski Nauchnykh Seminarov POMI, Problems in the theory of representations of algebras and groups. Part 6, Tome 265 (1999), pp. 222-228 Cet article a éte moissonné depuis la source Math-Net.Ru

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New upper bound on the global dimension of a pullback ring is given and Scrivanti's upper bound on the weak dimension of a pullback ring is generalized to noncommutative case. 
@article{ZNSL_1999_265_a15,
     author = {N. V. Kosmatov},
     title = {Upper bounds on homological dimensions of pullback rings},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {222--228},
     year = {1999},
     volume = {265},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1999_265_a15/}
}
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N. V. Kosmatov. Upper bounds on homological dimensions of pullback rings. Zapiski Nauchnykh Seminarov POMI, Problems in the theory of representations of algebras and groups. Part 6, Tome 265 (1999), pp. 222-228. http://geodesic.mathdoc.fr/item/ZNSL_1999_265_a15/