On using an efficiency matrix in analysing profit per employee (on the basis of the Estonian SME software sector)Siimann, Paavo; Alver, JaanZeszyty teoretyczne rachukowosci2015 / p. 195-215 : ill http://dx.doi.org/10.5604/16414381.1173928 Profit per employee analysis (on the basis of Estonian SME software sector) [Electronic resource]Siimann, Paavo; Alver, JaanDoctoral school in economics and innovation : Doctoral Summer School 2015 : August 3-6, Pühajärve2015 / 18 p. : ill. [CD-ROM]