title: Comment on "Unified formalism of Andreev reflection at a ferromagnet/superconductor interface".
authors.affiliation: Department of Physics, Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: Eschrig
authors.forename: A A
authors.initials: AA
authors.lastname: Golubov
authors.forename: I I
authors.initials: II
authors.lastname: Mazin
authors.forename: B
authors.initials: B
authors.lastname: Nadgorny
authors.forename: Y
authors.initials: Y
authors.lastname: Tanaka
authors.forename: O T
authors.initials: OT
authors.lastname: Valls
authors.forename: Igor
authors.initials: I
authors.lastname: Zutić