1. Ashby, E.: The structure of higher education: A world view, High. Educ., 2, 142–151, https://doi.org/10.1007/BF00137744, 1973.
2. Bennett, N.: Teaching Styles and Pupil Progress, Open Books Publishing Ltd, p. 216, 1976.
3. Biggs, J. and Tang, C.: Teaching for Quality Learning at University, Society for Research Into Higher Education, Open University Press, 480, 2011.
4. Cottrell, A. and Lucchetti, R.: Gretl User's Guide, available at: http://ricardo.ecn. wfu.edu/pub//gretl/manual/en/gretl-guide.pdf, last access: 15 November 2011.
5. Eble, K. E. (Ed.): Teaching styles and faculty behavior, in: Improving teaching styles, Jossey-Bass, San Francisco, CA, 1980.