MILLER, D. L.; REXSTAD, E.; THOMAS, L.; MARSHALL, L.; LAAKE, J. L. Distance Sampling in R. Journal of Statistical Software, [S. l.], v. 89, n. 1, p. 1–28, 2019. DOI: 10.18637/jss.v089.i01. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v089i01. Acesso em: 4 dec. 2022.