title: Manifestation of a clear gap structure from point-contact and tunneling spectroscopy of YBa2Cu3O7-x and YbBa2Cu3O7-x single crystals.
authors.initials: YG
authors.lastname: Ponomarev
authors.initials: NB
authors.lastname: Brandt
authors.initials: CS
authors.lastname: Khi
authors.initials: SV
authors.lastname: Tchesnokov
authors.initials: EB
authors.lastname: Tsokur
authors.initials: AV
authors.lastname: Yarygin
authors.initials: KT
authors.lastname: Yusupov
authors.initials: BA
authors.lastname: Aminov
authors.initials: MA
authors.lastname: Hein
authors.initials: G
authors.lastname: Müller
authors.initials: H
authors.lastname: Piel
authors.initials: D
authors.lastname: Wehler
authors.initials: VZ
authors.lastname: Kresin
authors.initials: K
authors.lastname: Rosner
authors.initials: K
authors.lastname: Winzer
authors.initials: T
authors.lastname: Wolf