title: Extension of the clathrate family: the type X clathrate Ge79P29S18Te6.
authors.affiliation: Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia.
authors.forename: Maria A
authors.initials: MA
authors.lastname: Kirsanova
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Olenev
authors.forename: Artem M
authors.initials: AM
authors.lastname: Abakumov
authors.forename: Mikhail A
authors.initials: MA
authors.lastname: Bykov
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Shevelkov