TY  - JOUR
AU  - J. Almeida
TI  - Power pseudovarieties of semigroups I.
JO  - Semigroup forum
PY  - 1986
SP  - 357
EP  - 374
VL  - 33
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1986__33_134819/
ID  - SF_1986__33_134819
ER  -