@article {Bowen1992a,
	title = {{Manned versus unmanned systems: a complementary approach}},
	journal = {Marine Technology Society Journal},
	volume = {26},
	number = {4},
	year = {1992},
	pages = {79{\textendash}80},
	issn = {0025-3324},
	author = {Bowen, A D and Walden, B B}
}
