Bermúdez-Hidalgo, Ligia, José Castro Solís, Karla Vetrani-Chavarría, Manfred Murrell-Blanco, Douglas Barraza, and Manuel Méndez-Flores. 2019. “Development of Acoustic Maps in Heredia, Alajuela and Belén Counties, As Indicators of Noise Pollution”. Revista Geográfica De América Central. 4 (61E): 175-95. https://doi.org/10.15359/rgac.61-4.9.