TY  - JOUR 
T1  - Edge-clique graphs and the lambda-coloring problem
JO  - Journal of the Brazilian Computer Society
A1  - Calamoneri, Tiziana
A1  - Petreschi, Rossella
SN  - 0104-6500
UL  - 10.1590/S0104-65002001000200006
VL  - 7 
Y1  - 2001
PB  - Brasil 
ER  -