Ørstavik, Ø., Manfra, O., Andressen, K. W., Andersen, G. Ø., Skomedal, T., Osnes, J., . . . Krobert, K. A. (2015). The Inotropic Effect of the Active Metabolite of Levosimendan, OR-1896, Is Mediated through Inhibition of PDE3 in Rat Ventricular Myocardium. PLoS One.

Ørstavik, Øivind, Ornella Manfra, Kjetil Wessel Andressen, Geir Øystein Andersen, Tor Skomedal, Jan-Bjørn Osnes, Finn Olav Levy, và Kurt Allen Krobert. "The Inotropic Effect of the Active Metabolite of Levosimendan, OR-1896, Is Mediated Through Inhibition of PDE3 in Rat Ventricular Myocardium." PLoS One 2015.

Ørstavik, Øivind, et al. "The Inotropic Effect of the Active Metabolite of Levosimendan, OR-1896, Is Mediated Through Inhibition of PDE3 in Rat Ventricular Myocardium." PLoS One 2015.