Sarip, S., Soeparman, S., Yuliati, L. and Choiron, M. A. (2018) “Visualization of bubbles formation on the boiling process in tapering heat pipe with variation of evaporator to condenser diameter ratio”, Eastern-European Journal of Enterprise Technologies, 3(8 (93), pp. 35–40. doi: 10.15587/1729-4061.2018.133973.