TY  - JOUR
AU  - Miguel de Guzmán
TI  - A covering lemma with applications to differentiability of measures and singular integral operators
JO  - Studia Mathematica
PY  - 1970
SP  - 299
EP  - 317
VL  - 34
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-34-3-299-317/
DO  - 10.4064/sm-34-3-299-317
LA  - en
ID  - 10_4064_sm_34_3_299_317
ER  -