@inproceedings{SpindlerZieglerAlefeld1994, author = {Spindler, Uli and Ziegler, Felix and Alefeld, G{\"o}tz}, title = {W{\"a}rme-K{\"a}lte-Kopplung mit einer Kompressions-Absorptions-W{\"a}rmepumpe: Betriebserfahrungen und Einsatzm{\"o}glichkeiten}, series = {Tagungsbericht der Deutschen K{\"a}lte-Klima-Tagung 1994, Bonn, 16.-18. November 1994}, booktitle = {Tagungsbericht der Deutschen K{\"a}lte-Klima-Tagung 1994, Bonn, 16.-18. November 1994}, year = {1994}, language = {de} } @article{ZieglerSpindler1993, author = {Ziegler, Felix and Spindler, Uli}, title = {An ammonia refrigerator with an absorption circuit as economizer}, series = {International Journal of Refrigeration}, journal = {International Journal of Refrigeration}, number = {7/93}, pages = {230 -- 239}, year = {1993}, language = {en} }