Lee, W. ., Rhee, C. ., Koo, J. ., Lee, J. ., Jang, S. ., Choi, S. ., … Lee, J. . (1969). Round-robin test on thermal conductivity measurement of ZnO nanofluids and comparison of experimental results with theoretical bounds. Nanoscale Research Letters, 6(1), 258. https://doi.org/10.1186/1556-276X-6-258 (Original work published)