@article{article925c2b98,
title   = {Fracture toughness of natural fibers/castor oil polyurethane composites},
author = {Silva, Rosana Vilarim da and Spinelli, D and Bose Filho, Waldek Wladimir and Claro Neto, Salvador and Chierice, Gilberto Orivaldo and Tarpani, José Ricardo},
year = {2006},
doi = {10.1016/j.compscitech.2005.10.012},
journal   = {Composites Science and Technology}
}