Mori M, Takeuchi M, Takaoka H, Hata K, Hayashi Y, Yokoyama M (August 1994). "Effect of NKH477, a new water-soluble forskolin derivative, on arterial-ventricular coupling and mechanical energy transduction in patients with left ventricular systolic dysfunction: comparison with dobutamine". J. Cardiovasc. Pharmacol. 24 (2): 310–6. doi:10.1097/00005344-199424020-00018. PMID7526066.
Mori M, Takeuchi M, Takaoka H, Hata K, Hayashi Y, Yokoyama M (August 1994). "Effect of NKH477, a new water-soluble forskolin derivative, on arterial-ventricular coupling and mechanical energy transduction in patients with left ventricular systolic dysfunction: comparison with dobutamine". J. Cardiovasc. Pharmacol. 24 (2): 310–6. doi:10.1097/00005344-199424020-00018. PMID7526066.