1. Humphrey, J.; Siebert, A.: Separation technologies: an opportunity for energy savings. Chem. Eng. Prog. 88, 32–41 (1992)
2. Schaller, M.: Numerically optimized diabatic distillation columns. PHD thesis, Technische Universitat Chemnitz, Fakultat fur Naturwissenschaften, Germany (2007)
3. Brugma, A.: Dutch Patent No. 41,850 (1937)
4. Wright, R.: Fractionation apparatus, US Patent 2,471,134 (1949)
5. Petlyuk, F.: Thermodynamically optimal method for separating multicomponent mixtures. Int. Chem. Eng. 5, 555–561 (1965)