@article{GDZPPN002087111,
title = {Homotopieklassen von Idealbasen in Steinschen Algebren.},
journal = {Inventiones mathematicae},
volume = {5},
year = {1968},
pages = {255-276},
zbl = {0157.13302},
url = {http://dml.mathdoc.fr/item/GDZPPN002087111}
}
FORSTER, O.; RAMSPOTT, K.J. Homotopieklassen von Idealbasen in Steinschen Algebren.. Inventiones mathematicae, Tome 5 (1968) pp. 255-276. http://gdmltest.u-ga.fr/item/GDZPPN002087111/