@article{RSMUP_1969__42__201_0, author = {Schaefer, D. J.}, title = {On multiplicity functions and Lebesgue area}, journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova}, volume = {42}, year = {1969}, pages = {201-207}, mrnumber = {276444}, zbl = {0234.28011}, language = {en}, url = {http://dml.mathdoc.fr/item/RSMUP_1969__42__201_0} }
Schaefer, D. J. On multiplicity functions and Lebesgue area. Rendiconti del Seminario Matematico della Università di Padova, Tome 42 (1969) pp. 201-207. http://gdmltest.u-ga.fr/item/RSMUP_1969__42__201_0/
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