Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1994__117_3-4_178637, author = {M. Ghamsari and R. N\"akki}, title = {John {Disks} and {Extensions} of {Maps.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {63--94}, publisher = {mathdoc}, volume = {117}, number = {3-4}, year = {1994}, zbl = {0794.30020}, url = {http://geodesic.mathdoc.fr/item/MOMA_1994__117_3-4_178637/} }
M. Ghamsari; R. Näkki. John Disks and Extensions of Maps.. Monatshefte für Mathematik, Tome 117 (1994) no. 3-4, pp. 63-94. http://geodesic.mathdoc.fr/item/MOMA_1994__117_3-4_178637/