Llopis-Albert, Carlos, and Alexandra Mena-Vásquez. “Measuring Tourism Accommodation Efficiency under Environmental and Structural Constraints: A Multi‑Stage DEA–Malmquist Approach for the Valencian Community (Spain)”. JOINETECH, vol. 2, no. 1, May 2026, pp. 19-32, https://doi.org/10.65479/joinetech.39.