Hellerström C., Eizirik D. L., Welsh N., Sjöholm Åke, Jansson L., Svensson C., Strandell E., Korsgren O., Li Z.-Q., Anderson A., and Sandler S. “New Perspectives on the Structure and Function of the Normal and Diabetic β-Cell”. Upsala Journal of Medical Sciences, vol. 96, no. 1, Sept. 1991, pp. 1-16, doi:10.3109/03009739109179254.