Oliveira, Nelson R. Manzoni de, and John P. Kennedy. “Diameter-Crimp Frequency Relationship of Wool from Sheep on Different Breeds and Age Groups, and in Varying Environmental Conditions”. Pesquisa Agropecuaria Brasileira, vol. 24, no. 11, Apr. 2014, pp. 1413-20, doi:10.1590/S1678-3921.pab1989.v24.16548.