@article{RLIN_1991_9_2_3_a7,
     author = {De Michelis, Stefano},
     title = {On manifolds diffeomorphic on the complement of a point},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {229--233},
     publisher = {mathdoc},
     volume = {Ser. 9, 2},
     number = {3},
     year = {1991},
     zbl = {0779.57013},
     mrnumber = {1032074},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1991_9_2_3_a7/}
}