HERBAI G., WESTMAN-NAESER S., CARLSSON L., and NILSSON K. “Prolonged Serum Insulin Decreasing Effects of Two Synthetic Somatostatin Analogues Studied in Vivo by a New Animal Method: Preliminary Communication”. Upsala Journal of Medical Sciences, vol. 83, no. 3, Sept. 1978, pp. 141-4, doi:10.3109/03009737809179128.