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Tahedl, Harald; Donat-Peter, Haeder (2001). "Automated Biomonitoring Using Real Time Movement Analysis of Euglena gracilis". Ecotoxicology and Environmental Safety. 48 (2): 161–169. Bibcode:2001EcoES..48..161T. doi:10.1006/eesa.2000.2004. PMID11161690.
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Ahmed, Hoda; Häder, Donat-Peter (2011). "Monitoring of Waste Water Samples Using the ECOTOX Biosystem and the Flagellate Alga Euglena gracilis". Water, Air, & Soil Pollution. 216 (1–4): 547–560. Bibcode:2011WASP..216..547A. doi:10.1007/s11270-010-0552-4. S2CID98814927.
Bicknell, Jake E.; Phelps, Simon P.; Davies, Richard G.; Mann, Darren J.; Struebig, Matthew J.; Davies, Zoe G. (2014). "Dung beetles as indicators for rapid impact assessments: Evaluating best practice forestry in the neotropics". Ecological Indicators. 43: 154–161. Bibcode:2014EcInd..43..154B. doi:10.1016/j.ecolind.2014.02.030.
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Tahedl, Harald; Donat-Peter, Haeder (2001). "Automated Biomonitoring Using Real Time Movement Analysis of Euglena gracilis". Ecotoxicology and Environmental Safety. 48 (2): 161–169. Bibcode:2001EcoES..48..161T. doi:10.1006/eesa.2000.2004. PMID11161690.
Mazor, Raphael D.; Rehn, Andrew C.; Ode, Peter R.; Engeln, Mark; Schiff, Kenneth C.; Stein, Eric D.; Gillett, David J.; Herbst, David B.; Hawkins, Charles P. (2016-03-01). "Bioassessment in complex environments: designing an index for consistent meaning in different settings". Freshwater Science. 35 (1): 249–271. doi:10.1086/684130. ISSN2161-9549. S2CID54717345.
Lambert, M. R. K. (1997-01-01). "Environmental Effects of Heavy Spillage from a Destroyed Pesticide Store near Hargeisa (Somaliland) Assessed During the Dry Season, Using Reptiles and Amphibians as Bioindicators". Archives of Environmental Contamination and Toxicology. 32 (1): 80–93. Bibcode:1997ArECT..32...80L. doi:10.1007/s002449900158. PMID9002438. S2CID24315472.
Smith, A. J.; Duffy, B. T.; Onion, A.; Heitzman, D. L.; Lojpersberger, J. L.; Mosher, E. A.; Novak, M. A . (2018). "Long-term trends in biological indicators and water quality in rivers and streams of New York State (1972–2012)". River Research and Applications. 34 (5): 442–450. Bibcode:2018RivRA..34..442S. doi:10.1002/rra.3272. ISSN1535-1467. S2CID133650984.
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Mazor, Raphael D.; Rehn, Andrew C.; Ode, Peter R.; Engeln, Mark; Schiff, Kenneth C.; Stein, Eric D.; Gillett, David J.; Herbst, David B.; Hawkins, Charles P. (2016-03-01). "Bioassessment in complex environments: designing an index for consistent meaning in different settings". Freshwater Science. 35 (1): 249–271. doi:10.1086/684130. ISSN2161-9549. S2CID54717345.
Smith, A. J.; Duffy, B. T.; Onion, A.; Heitzman, D. L.; Lojpersberger, J. L.; Mosher, E. A.; Novak, M. A . (2018). "Long-term trends in biological indicators and water quality in rivers and streams of New York State (1972–2012)". River Research and Applications. 34 (5): 442–450. Bibcode:2018RivRA..34..442S. doi:10.1002/rra.3272. ISSN1535-1467. S2CID133650984.