@article{Hisa-Aki Tanaka2016, title={Better clock synchronization from simultaneous two skew estimations}, author={Hisa-Aki Tanaka and Youjie Ouyang and Yoji Yabe and Isao Nishikawa and Kazuki Nakada}, journal={Nonlinear Theory and Its Applications, IEICE}, volume={7}, number={4}, pages={548-556}, year={2016}, doi={10.1587/nolta.7.548} }