1. Aghaeiboorkheili, M., and Kawagle, J., 2022, The History of the derivation of Euler’s Number: Zeitschrift für Angewandte Mathematik und Physik, v. 10, p. 2780–2795, accessed February 2023 at https://www.scirp.org/journal/paperinformation.aspx?paperid=120075.
2. Alden, W.C., 1953, Physiography and glacial geology of western Montana and adjacent areas: U.S. Geological Survey Professional Paper 231, 200 p. [Also available at https://doi.org/10.3133/pp231.]
3. Allan, R.J., 1979, Sediment-related fluvial transmission of contaminants—Some advances by 1979: Inland waters directorate western and northern region Regina, Saskatchewan, Scientific Series no. 107, 24 p., accessed April 2021 at https://publications.gc.ca/site/eng/9.851897/publication.html.
4. Anderson, C.W., 2004, Turbidity (version 2.0): U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chap. A6, section 6.7, 64 p., accessed April 2021 at https://doi.org/10.3133/twri09A6.7.
5. Andrews, E.D., 1987, Longitudinal dispersion of trace metals in the Clark Fork River, Montana, in Averett, R.C., and McKnight, D.M., eds., The chemical quality of water and the hydrologic cycle: Chelsea, Michigan, Lewis Publishers, Inc., p. 1–13.