Nak Joong Lee, Morihito Inagaki, Toshiaki Kanemoto. Performance of counter-rotating tandem propellers at oblique flow conditions. IOP Conference Series: Earth and Environmental Science. 2019. 240. 5
Nak Joong Lee, Toshiaki Kanemoto, Kazuo Kuwano, Isao Samura. Performance of tandem propellers counter-rotating obliquely to tidal stream. Proceedings of the International Offshore and Polar Engineering Conference. 2017. 253-256
I. C. Kim, N. J. Lee, J. Wata, B. S. Hyun, Y. H. Lee. Experiments on the magnetic coupling in a small scale counter rotating marine current turbine. IOP Conference Series: Materials Science and Engineering. 2016. 129. 1