@article{VMUMM_1987_3_a15,
     author = {V. V. Petunin},
     title = {A constructive example of a bounded {Stein} domain that is not holomorphically contractible},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {56--58},
     publisher = {mathdoc},
     number = {3},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1987_3_a15/}
}