@article{GDZPPN002204584,
title = {Realization of homotopy classes by algebraic mappings.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {374},
year = {1987},
pages = {159-169},
zbl = {0619.14014},
url = {http://dml.mathdoc.fr/item/GDZPPN002204584}
}
Bochnak, J.; Kucharz, W. Realization of homotopy classes by algebraic mappings.. Journal für die reine und angewandte Mathematik, Tome 374 (1987) pp. 159-169. http://gdmltest.u-ga.fr/item/GDZPPN002204584/