1. S. Yoshida, T. Matsunaga, H.P. Hong, K. Nishikawa, Heat transfer to refrigerants in horizontal evaporator-tubes with internal, spiral grooves, in: P.J. Marto (Ed.), Proc. 1987 ASME-SSME Thermal Eng. Joint Conf., vol. 5, 1987, pp. 165–172
2. Two-phase (air–water) flow patterns and pressure drop in the presence of helical wire ribs;Weisman;Int. J. Multiphase Flow,1994
3. Flow patterns in annular geometry of an absorber pipe with DSG by water injection;Geskes,1996
4. Visuaization of two-phase flow trough microgrooved tubes for understanding enhanced heat transfer;Shedd;Int. J. Heat Mass Transfer,2003
5. M. Eck, P. Geskes, O. Goebel, U. Hermann, F. Lippke, E. Rojas, W.D. Steinmann, Final Task Report on DSG Applied Research (Doc. ID. DISS-MQ-QA-32. Confidential) of the Direct Solar Steam (DISS)––phase I project. JOR3-CT95-0058