Ouellette, G. B.; Rioux, D.; Simard, M.; Chamberland, H.; Cherif, M.; Baayen, R. P. Ultrastructure of the Alveolar Network and Its Relation to Coating on Vessel Walls in Elms Infected by Ophiostoma Novo-Ulmi and in Other Plants Affected With Similar Wilt Diseases. For. syst. 2004, 13, 147-160.