title: Effects of the magnetic and thermal history in granular samples of Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O: Experimental evidence of a sharp transition into a frozen state at low temperature.
authors.initials: M
authors.lastname: Giura
authors.initials: R
authors.lastname: Fastampa
authors.initials: R
authors.lastname: Marcon
authors.initials: E
authors.lastname: Silva