Jang IK، Lee ZH، Kim YJ، Kim SH، Kwon BS (يناير 1998). "Human 4-1BB (CD137) signals are mediated by TRAF2 and activate nuclear factor-kappa B". Biochemical and Biophysical Research Communications. ج. 242 ع. 3: 613–20. DOI:10.1006/bbrc.1997.8016. PMID:9464265.
Jang IK، Lee ZH، Kim YJ، Kim SH، Kwon BS (يناير 1998). "Human 4-1BB (CD137) signals are mediated by TRAF2 and activate nuclear factor-kappa B". Biochemical and Biophysical Research Communications. ج. 242 ع. 3: 613–20. DOI:10.1006/bbrc.1997.8016. PMID:9464265.