Poff, N. LeRoy; Allan, J. David; Bain, Mark B.; Karr, James R.; Prestegaard, Karen L.; Richter, Brian D.; Sparks, Richard E.; Stromberg, Julie C. (Dec 1997). "The Natural Flow Regime". BioScience (بالإنجليزية). 47 (11): 769–784. DOI:10.2307/1313099. ISSN:0006-3568. JSTOR:1313099.
Poff, N. LeRoy; Allan, J. David; Bain, Mark B.; Karr, James R.; Prestegaard, Karen L.; Richter, Brian D.; Sparks, Richard E.; Stromberg, Julie C. (Dec 1997). "The Natural Flow Regime". BioScience (بالإنجليزية). 47 (11): 769–784. DOI:10.2307/1313099. ISSN:0006-3568. JSTOR:1313099.
Poff, N. LeRoy; Allan, J. David; Bain, Mark B.; Karr, James R.; Prestegaard, Karen L.; Richter, Brian D.; Sparks, Richard E.; Stromberg, Julie C. (Dec 1997). "The Natural Flow Regime". BioScience (بالإنجليزية). 47 (11): 769–784. DOI:10.2307/1313099. ISSN:0006-3568. JSTOR:1313099.
Poff, N. LeRoy; Allan, J. David; Bain, Mark B.; Karr, James R.; Prestegaard, Karen L.; Richter, Brian D.; Sparks, Richard E.; Stromberg, Julie C. (Dec 1997). "The Natural Flow Regime". BioScience (بالإنجليزية). 47 (11): 769–784. DOI:10.2307/1313099. ISSN:0006-3568. JSTOR:1313099.