Yli-Olli, Paavo; Virtanen, Ilkka Modelling a financial ratio system on the economy-wide level. (English) Zbl 0564.90007 Acta Wasaensia 21, Business Administration 6. Vaasa: Universitas Wasaensis. 74 p. (1985). MSC: 91B82 91B84 62P20 PDFBibTeX XMLCite \textit{P. Yli-Olli} and \textit{I. Virtanen}, Modelling a financial ratio system on the economy-wide level. Vaasa: Universitas Wasaensis (1985; Zbl 0564.90007)
Aho, Teemu; Virtanen, Ilkka Internal rate of return and ROI as profitability indicators in investment analysis. (English) Zbl 0476.90020 Acta Wasaensia 15, Business Administration 3. Vaasa: Universitas Wasaensis. 38 p. (1982). MSC: 91B82 91B28 90B99 PDFBibTeX XMLCite \textit{T. Aho} and \textit{I. Virtanen}, Internal rate of return and ROI as profitability indicators in investment analysis. Vaasa: Universitas Wasaensis (1982; Zbl 0476.90020)