Hagiwara Y., Chimoto E., Takahashi I., Ando A., Sasano Y., and Itoi E. “Expression of Transforming Growth Factor-β1 and Connective Tissue Growth Factor in the Capsule in a Rat Immobilized Knee Model”. Upsala Journal of Medical Sciences, vol. 113, no. 2, July 2008, pp. 221–234, doi:10.3109/2000-1967-223.