Direct extraction of the eliashberg function for electron-phonon coupling: A case study of be(1010̄) - Junren Shi; S.-J. Tang; Biao Wu; P.T. Sprunger; W.L. Yang; V. Brouet; X.J. Zhou; Z. Hussain; Z.-X. Shen; Zhenyu Zhang; E.W. Plummer (Physical Review Letters, 2004)