J. A. Acuña-González, J. A. Vargas-Zamora, and R. Córdoba-Muñoz, “A snapshot view of some vertical distributions of water parameters at a deep (200 m) station in the fjord-like Golfo Dulce, embayment, Costa Rica”, Rev. Biol. Trop., vol. 54, no. S1, pp. 193–200, Sep. 2006.