Ver Hoef J, Peterson E, Clifford D, Shah R. SSN: An R Package for Spatial Statistical Modeling on Stream Networks. J. Stat. Soft. [Internet]. 2014 Jan. 25 [cited 2024 Apr. 19];56(3):1-45. Available from: https://www.jstatsoft.org/index.php/jss/article/view/v056i03