1. Cable PJ, Boger DV (1978) AIChE J 24:869
2. Gerald GG, Zawada JA, Atcher LA, Friedenberg MC (1994) Progress and Trends in Rheology. Proc IV-th Eur Congr. Rheology. pp 6-8
3. Ivanov Y, Kavardjikov V, Kotsilkova K, Pashkouleva D, Stoyanov V (1997) J. Th Appl Mech, Sofia, Year XXVII, (in press)
4. Kavardjikov V, Nikolov I, Manolova A, Illieva P (1998), Opt Quantum Electr 30:33–38