The measurement of English and Welsh police force efficiency: A comparison of distance function models. - Leigh Drake; Richard Simper (Eur. J. Oper. Res., 2003)

Comparative analysis of banking production frameworks in eastern european financial markets. - Karligash Kenjegalieva; Richard Simper; Tom Weyman-Jones; Valentin Zelenyuk (Eur. J. Oper. Res., 2009)

A new approach to dealing with negative numbers in efficiency analysis: An application to the Indonesian banking sector. - Muliaman D. Hadad; Maximilian J. B. Hall; Karligash Kenjegalieva; Wimboh Santoso; Richard Simper (Expert Syst. Appl., 2012)

An analysis of managerialism and performance in English and Welsh male prisons. - Nicky Rogge; Richard Simper; Marijn Verschelde; Maximilian J. B. Hall (Eur. J. Oper. Res., 2015)

How relevant is the choice of risk management control variable to non-parametric bank profit efficiency analysis? The case of South Korean banks. - Richard Simper; Maximilian J. B. Hall; WenBin Liu; Valentin Zelenyuk; Zhongbao Zhou (Ann. Oper. Res., 2017)

Is there a prison size dilemma? An empirical analysis of output-specific economies of scale. - Veerle Hennebel; Richard Simper; Marijn Verschelde (Eur. J. Oper. Res., 2017)