Smal, J., Closset, J.-M., Hennen, G., & De Meyts, P. (1985). Receptor-binding and Down-regulatory Properties of 22000-mr Human Growth-hormone and its Natural 20000-mr Variant On Im-9 Human-lymphocytes. Biochemical Journal, 225(2), 283-289. https://hdl.handle.net/2078.5/45091 (Original work published 1985)