@article{RSMUP_1971__46__49_0, author = {Zamfirescu, Tudor}, title = {Area contractions in the plane}, journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova}, volume = {46}, year = {1971}, pages = {49-52}, mrnumber = {310856}, zbl = {0234.54017}, language = {en}, url = {http://dml.mathdoc.fr/item/RSMUP_1971__46__49_0} }
Zamfirescu, Tudor. Area contractions in the plane. Rendiconti del Seminario Matematico della Università di Padova, Tome 46 (1971) pp. 49-52. http://gdmltest.u-ga.fr/item/RSMUP_1971__46__49_0/