Okada; Shinozaki, T.; Hirato, J.; Yanagawa, T.; Takagishi, K. (2009). "Fibroma of tendon sheath of the infrapatellar fat pad in the knee". Clinical Imaging. 33 (5): 406–408. doi:10.1016/j.clinimag.2008.11.029. PMID19712825.
Okada; Shinozaki, T.; Hirato, J.; Yanagawa, T.; Takagishi, K. (2009). "Fibroma of tendon sheath of the infrapatellar fat pad in the knee". Clinical Imaging. 33 (5): 406–408. doi:10.1016/j.clinimag.2008.11.029. PMID19712825.