Casarino, V., Ciatti, P. and Sjögren, P. 2020. The maximal operator of a normal Ornstein-Uhlenbeck semigroup is of weak type (1,1). ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE. 21, special, 1-2 (Dec. 2020), 385-410. DOI:https://doi.org/10.2422/2036-2145.201805_012.