Target-strength, length, and tilt-angle measurements of Pacific saury (Cololabis saira) and Japanese anchovy (Engraulis japonicus) using an acoustic-optical system

K Sawada, H Takahashi, K Abe, T Ichii, K Watanabe and Y. Takao

ICES Journal of Marine Science 66 ( 6 ): 1212 - 1218 , 2009