Elwan, A., Singh, R., Patterson, M., Roygard, J., Horne, D., Clothier, B., & Jones, G. (2018). Influence of sampling frequency and load calculation methods on quantification of annual river nutrient and suspended solids loads. Environmental Monitoring and Assessment, 190(2), 78. https://doi.org/10.1007/s10661-017-6444-y (Original work published 2018)