1. APHA (1999) Standard methods for the Examination of water and wastewater. 9th American Public Helth Association, Washington
2. AQEM (2002) Manual for the application of the AQEM system. A comprehensive method to assess European streams using benthic macroinvertebrates, developed for the purpose of the Water Framework Directive. Contract No: EVK1-CT1999-00027)
3. Armitage PD, Moss D, Wright JF, Furse MT (1983) The performance of a new biological water quality score system based on macroinvertebrates over a wide range of unpolluted running-water sites. Water Res 17:333–347. doi: 10.1016/0043-1354(83)90188-4
4. Armitage PD, Cranston P, Pinder LCV (1995) The Chironomidae: biology and ecology of non-biting midges. Chapman and Hall, London
5. Barbour MT, Gerritsen J, Snyder BD, Stribling JB (1999) Rapid bioassessment protocols for use in streams and wadeable rivers: periphyton, bentic macroinvertebrates and fish, 2nd edn. EPA 841-b-99-002. US Environmental Protection Agency, Office of Water, Washington, DC