Blasco, Dolors, Maurice Levasseur, Esther Bonneau, Roger Gelinas, and T. T. Packard. 2003. “Patterns of Paralytic Shellfish Toxicity in the St. Lawrence Region in Relationship With the Abundance and Distribution of Alexandrium Tamarense”. Scientia Marina 67 (3):261-78. https://doi.org/10.3989/scimar.2003.67n3261.