Justin Yackoski Chien-Chung Shen UW-FLASHR: achieving high channel utilization in a time-based acoustic mac protocol. 59-66 2008 Underwater Networks http://doi.acm.org/10.1145/1410107.1410119 conf/mobicom/2008wuwnet db/conf/mobicom/wuwnet2008.html#YackoskiS08