Source: https://www.researchgate.net/profile/Lena_Measures/publication/282660724_Documentation_de_levolution_du_protocole_dexamen_des_carcasses_de_beluga_de_lestuaire_du_Saint-Laurent_de_1983_a_2012/links/561697ee08ae90469c60f00e/Documentation-de-l-evolution-du-protocole-d-examen-des-carcasses-de-beluga-de-l-estuaire-du-Saint-Laurent-de-1983-a-2012.pdf