(1)
A.I. Akimenko, F. Bobba, F. Giubileo, V.A. Gudimenko, S. Piano, and A.M. Cucolo, Evidence of a s-wave subdominant order parameter in YBa2Cu3O7-d from break-junction tunneling spectra, Low Temp. Phys. 36, (2010) [Fiz. Nizk. Temp. 36, 212-216, (2010)] DOI: https://doi.org/10.1063/1.3319499.