Red rains as major contributors of nutrients and alkalinity to terrestrial ecosystems at Montseny (NE Spain).

Avila A, Rodà F (1991) Red rains as major contributors of nutrients and alkalinity to terrestrial ecosystems at Montseny (NE Spain). Orsis 6:215-229.

La pluja àcida a Catalunya.

Avila A, Piñol J (1991) La pluja àcida a Catalunya. Medi Ambient, febrer pp. 71-73.