Merchán, E. C. R., S. S. Herrera, and J. M. G. Lopez. “Limb Salvage Procedures in Osteosarcomas Around the Knee Joint”. São Paulo Medical Journal, vol. 112, no. 4, Oct. 1994, pp. 661-7, https://periodicosapm.emnuvens.com.br/spmj/article/view/1490.