TY  - JOUR 
T1  - Protection between strains of Papaya ringspot virus: type w in zucchini squash involves competition for viral replication sites
JO  - Scientia Agricola
A1  - Freitas, Débora Maria Sansini
A1  - Rezende, Jorge Alberto Marques
SN  - 0103-9016
UL  - 10.1590/S0103-90162008000200012
VL  - 65 
Y1  - 2008
PB  - Brasil 
ER  -