[en] The authors present estimates for the bare Sommerfeld constant (γ_B) and the strength of the electron-phonon coupling based on specific heat measurements of YBa₂Cu₃O_7-δ. γ_B is determined from measurements made at high temperatures (300 to 700K). The strength of the electron-phonon coupling is determined by the ratio of the low- to the high-temperature values of the Sommerfeld constant. The high temperature specific heat is determined from measurements of the enthalpy of YBa₂Cu₃O_7-δ between 300 and 700K. Here, the authors will present only the data; full details of the analysis are given. As seen in the paper, the high temperature specific heat agrees well with the lower temperature measurements