@inproceedings{inproceedingsb43f5ffe, title = {Virtual meson cloud of the nucleon and intrinsic strangeness and charm}, author = {Paiva, S and Nielsen, Marina and Navarra, Fernando Silveira and DurĂ£es, Francisco de Oliveira and Barz, L L}, year = {1996}, publisher = {IfUSP}, booktitle = {Reuniao de Trabalho sobre Interacoes Hadronicas} }