Zapf J، Kiefer M، Merryweather J، Musiarz F، Bauer D، Born W، Fischer JA، Froesch ER (أكتوبر 1990). "Isolation from adult human serum of four insulin-like growth factor (IGF) binding proteins and molecular cloning of one of them that is increased by IGF I administration and in extrapancreatic tumor hypoglycemia". J Biol Chem. ج.265 ع.25: 14892–8. PMID:1697583.
