On multiplicity functions and Lebesgue area
Rendiconti del Seminario Matematico della Università di Padova, Tome 42 (1969), pp. 201-207. 
@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},
     pages = {201--207},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {42},
     year = {1969},
     mrnumber = {276444},
     zbl = {0234.28011},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1969__42__201_0/}
}
TY  - JOUR
AU  - Schaefer, D. J.
TI  - On multiplicity functions and Lebesgue area
JO  - Rendiconti del Seminario Matematico della Università di Padova
PY  - 1969
SP  - 201
EP  - 207
VL  - 42
PB  - Seminario Matematico of the University of Padua
UR  - http://archive.numdam.org/item/RSMUP_1969__42__201_0/
LA  - en
ID  - RSMUP_1969__42__201_0
ER  - 
%0 Journal Article
%A Schaefer, D. J.
%T On multiplicity functions and Lebesgue area
%J Rendiconti del Seminario Matematico della Università di Padova
%D 1969
%P 201-207
%V 42
%I Seminario Matematico of the University of Padua
%U http://archive.numdam.org/item/RSMUP_1969__42__201_0/
%G en
%F 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://archive.numdam.org/item/RSMUP_1969__42__201_0/

[1] Eilenberg and Steenrod.: Foundation of Algebraic Topology, Princeton,1952. | Zbl

[2] Federer H.: Measure and area, Bull. Amer. Math. Soc. vol. 58 (1952), pp. 306-378. | MR | Zbl

[3] Mikle E.J.: On the definition of significant multiplicity for continuous transformation, Trans. Amer. Math. Soc. vol. 82 (1956), pp. 440-451. | MR | Zbl

[4] Rado T.: Length and Area, Amer. Math. Soc. Colloquim Pubblications vol. 30 (1948). | MR | Zbl

[5] Rado T. and Reichelderfer P.: Continuous Transformation in Analysis, Springer-Verlag, Berlin, Gottingen, Heidelberg, 1955. | MR | Zbl

[6] Schaefer D.J.: On tangential properties of Frechet surfaces, Rend. Circ. Mat. Palermo, series II, Tomo XIV (1965), pp. 171-182. | MR | Zbl