@article {30360,
	title = {Density and compressibility characteristics of air-water mixtures},
	volume = {13},
	year = {1976},
	pages = {386-396},
	publisher = {Canadian Geotechnical Journal },
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/RPViewDoc?_handler_=HandleInitialGet\&calyLang=eng\&journal=cgj\&volume=13\&articleFile=t76-040.pdf},
	author = {Fredlund, D. G.}
}
