TY  - JOUR
AU  - L. V. Toralballa
TI  - Piecewise flatness and surface area
JO  - Annales Polonici Mathematici
PY  - 1968
SP  - 223
EP  - 230
VL  - 21
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-21-2-223-230/
DO  - 10.4064/ap-21-2-223-230
LA  - en
ID  - 10_4064_ap_21_2_223_230
ER  -