title: X-ray-photoemission-spectroscopy study of the surface deterioration of Bi2Sr2CaCu2O8 and Bi1.7Pb0.3Sr2CaCu2O8 single crystals at 26 K.
authors.initials: A
authors.lastname: Balzarotti
authors.lastname: De Crescenzi M
authors.initials: N
authors.lastname: Motta
authors.initials: F
authors.lastname: Patella
authors.initials: A
authors.lastname: Sgarlata
authors.initials: P
authors.lastname: Paroli
authors.initials: G
authors.lastname: Balestrino
authors.initials: M
authors.lastname: Marinelli