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. Forest Systems, v. 13, n. 1, p. 147-160, 1 Apr. 2004.