Citation: Le. Read et E. Thanassoulis, Improving the identification of returns to scale in data envelopment analysis, J OPER RES, 51(1), 2000, pp. 102-110
Citation: N. Maniadakis et E. Thanassoulis, Assessing productivity changes in UK hospitals reflecting technology and input prices, APPL ECON, 32(12), 2000, pp. 1575-1589