TY  - JOUR
AU  - M. G. Stone
TI  - Proper congruences do not imply a modular congruence lattice
JO  - Colloquium Mathematicum
PY  - 1971
SP  - 25
EP  - 27
VL  - 23
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-23-1-25-27/
DO  - 10.4064/cm-23-1-25-27
LA  - en
ID  - 10_4064_cm_23_1_25_27
ER  -