Bustillos-Guzmán, J. and Lechuga-Devéze, C. 1989. Secchi Disk Lectures And Scalar Quanta Irradiance Relationships In The Pacific Coast Off Baja California And Gulf Of California. Ciencias Marinas. 15, 1 (Mar. 1989), 39–46. DOI:https://doi.org/10.7773/cm.v15i1.628.