Henquin, J.-C., & Meissner, HP. (1983). Dibutyryl-cyclic-amp Triggers Ca-2+ Influx and Ca-2+-dependent Electrical-activity in Pancreatic B-cells. Biochemical and Biophysical Research Communications, 112(2), 614-620. https://doi.org/10.1016/0006-291X(83)91508-5 (Original work published 1983)