How Many Topics/Foci. In: In: Linguistics and Language Studies; Exploring language from different perspectives (eds. I. Kovačič, M. Milojevic-Sheppard, S. Orel-Kos, J. Orešnik), pp. 9--20, Filozovska fakulteta Univerze v Ljubljani, Ljubljana, ISBN 961-227-071-6 (bibtex)