TY  - JOUR
AU  - K. Firoozbakhsn
AU  - G. Ahmadi
TI  - First strain gradient theory of granular materials
JO  - Theoretical and applied mechanics
PY  - 1980
SP  - 50 
VL  - 6
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TAM_1980_6_1_a3/
LA  - en
ID  - TAM_1980_6_1_a3
ER  -