Physical Review LettersIntegrable Impurity in the Supersymmetric t−J Model [Phys. Rev. Lett. 77, 5098 (1996)]Gerald Bedürftig, Fabian H. L. Eßler, Holger FrahmPublished Feb 17, 1997• 8 citationsPublisherAbstractReceived 9 January 1997DOI:https://doi.org/10.1103/PhysRevLett.78.1397©1997 American Physical SocietyDOI10.1103/physrevlett.78.1397