@article { ,
	title = {Nitrate uptake in phytoplankton: Measurements utilizing the radioisotope, N-13},
	journal = {Verh. Internat. Verein. Limnol.},
	volume = {20},
	year = {1978},
	pages = {388-392},
	author = {Gersberg, R. and Axler, R.P. and Krohn, K. and Peek, N. and Goldman, C.R.}
}