Emtner M., Gylfe E., and Roos P. “The Actions of Growth Hormone and Prolactin on Rat Hepatocytes Are Not Mediated by Changes in Cytoplasmic Ca<sup>2+</Sup&gt;”. Upsala Journal of Medical Sciences, vol. 94, no. 3, Sept. 1989, pp. 291-7, doi:10.3109/03009738909178570.