NISKANEN, Jyrki. On the Information Content of Accrua-Based and Cash-Based Accounting Income Numbers : Their Ability to Predict Investment Risk. 1. ed. Helsinki : School of Economic and Business Administration, 1990. 171 s. Acta Academiae Oeconomicae Helsingiensis, Series A:69. [Copy count : 1, currently available 1, at library only 0]