Radnitzky, Gerard. “The Internal Rate of Profit; As a Measure of Profitability. A Metascientific Comment on a Recent Study in Business Economics”. Ledelse og Erhvervsøkonomi 28 (januar 1, 1964). Set februar 5, 2026. https://tidsskrift.dk/ledelseogerhvervsoekonomi/article/view/34108.