title: An extensive class of solids full of holes large enough to enclose over 200 molecules of H2O.
authors.affiliation: School of Chemistry, University of Melbourne, Victoria 3010, Australia.
authors.forename: Brendan F
authors.initials: BF
authors.lastname: Abrahams
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Fitzgerald
authors.forename: Richard
authors.initials: R
authors.lastname: Robson