1. Adams, M.; Thornton, B.; Sepehri, M, 2011: “The impact of the pursuit of sustainability on the financial performance of the firm”, in: Journal of Sustainability and Green Business, 1, 1.
2. Akcigit, U., 2009: “Firm size, innovation and dynamic growth”, Manuscript, 1–67.
3. Allen, C., 2004: “The Dunbar number as a limit to group sizes” (7 April 2004).
4. Amato, L.; Wilder, R.P., 1985: “The effect of firm size on profit rates in U.S. manufacturing”, in: Southern Economic Journal, 52, 1: 181–190.
5. Amato, L.H.; Bursen, T.E., 2007: “The effect of firm size on profit rates in financial services”, in: Journal of Economics and Economic Education Research, 8, 1: 67–81.