2002 journal article
Nutrient removal from swine lagoon liquid by Lemna minor 8627
Transactions of the ASAE, 45(4), 1003–1010.
2000 conference paper
Nutrient removal from swine wastewater by duckweed - Spirodela punctata
Industrial wastewater and envrironmental contaminants : proceedings of the 1st World Water Congress of the International Water Association, held in Paris, France, 3-7 July 2000, 1.