@misc{hakvoort_optical_closure_1998, 
author={Hakvoort, H., Doerffer, R.},
title={Optical closure for case II water},
year={1998},
howpublished = {conference lecture: Kailua-Kona, HI (USA);},
note = {Hakvoort, H.; Doerffer, R.: Optical closure for case II water. Oceans Optics XIV. Kailua-Kona, HI (USA), 1998.}}