1. Adeyemi, D., Anyakora, C., Ukpo, G. E., Adedayo, A., & Darko, G. (2011). Evaluation of the levels of organochlorine pesticide residues in water samples of Lagos Lagoon using solid phase extraction method
2. Allan, I., Nyberg, E., Næs, K., Hoydal, K., & Larsen, M. (2009). Evaluation of passive samplers for the monitoring of contaminants in sediment and water.https://doi.org/10.6027/tn2009-563
3. Allan, I. J., Knutsson, J., Guigues, N., Mills, G. A., Fouillac, A.-M., & Greenwood, R. (2008). Chemcatcher® and DGT passive sampling devices for regulatory monitoring of trace metals in surface water. Journal of Environmental Monitoring, 10(7), 821–829. https://doi.org/10.1039/B802581A
4. Alvarez, D. A. (2010a). Estimated water concentration calculator from SPMD data using multiple PRCs, version 5.1. Microsoft Excel Spreadsheet
5. Alvarez, D. A. (2010b). Guidelines for the use of the semipermeable membrane device (SPMD) and the polar organic chemical integrative sampler (POCIS) in environmental monitoring studies. US Geological Survey, Techniques and Methods, 1, 28.