1.
Carvalho JA, Pontes T, Batista-Marques MI, Jardim R. A new species of Echium (Boraginaceae) from the island of Porto Santo (Madeira Archipelago). anjardbotmadr [Internet]. 2010Dec.30 [cited 2022Sep.29];67(2):87-96. Available from: https://rjb.revistas.csic.es/index.php/rjb/article/view/344