FISCHER, Jan, VRKOČ, Ivo. On the intrerplay between perturbative and nonperturbative QCD 1 2. ISBN 1-56396-837-1. In: REMBLIENSKI, J., ed. Particles, Fields and Gravitation. Woodburg New York: American Institute of Physics, 1998, s. 344-348. American Institute of Physics AIP Conference Proceedings., 453. ISBN 0-7354-0133.