Murgia, M., V. Dominicis, and M. Cresti. "A Pollen Calendar for Siena (Central Italy): Preliminary Data." New Phytologist 92/4 (December 1982): 601–605.

Murgia, M., V. Dominicis, and M. Cresti. "A Pollen Calendar for Siena (Central Italy): Preliminary Data." New Phytologist 92/4 (December 1982): 601–605.