Sala, E., Ribes, M., Hereu, B., Zabala, M., Alvà, V., Coma, R., & Garrabou, J. (1998). Temporal variability in abundance of the sea urchins Paracentrotus lividus and Arbacia lixula in the northwestern Mediterranean: Comparison between a marine reserve and an unprotected area.

Sala, Enric, Marta Ribes, Bernat Hereu, Mikel Zabala, Victor Alvà, Rafael Coma, and Joaquim Garrabou. Temporal Variability in Abundance of the Sea Urchins Paracentrotus Lividus and Arbacia Lixula in the Northwestern Mediterranean: Comparison between a Marine Reserve and an Unprotected Area. 1998.

Sala, Enric, et al. Temporal Variability in Abundance of the Sea Urchins Paracentrotus Lividus and Arbacia Lixula in the Northwestern Mediterranean: Comparison between a Marine Reserve and an Unprotected Area. 1998.