Direction selection in stochastic directional distance functions. - Kevin Layer; Andrew L. Johnson; Robin C. Sickles; Gary D. Ferrier (Eur. J. Oper. Res., 2020)

A data envelopment analysis and local partial least squares approach for identifying the optimal innovation policy direction. - Panagiotis Tziogkidis; Dionisis Philippas; Alexandros Leontitsis; Robin C. Sickles (Eur. J. Oper. Res., 2020)

Empirical surveys of frontier applications: a meta-review. - Cinzia Daraio; Kristiaan Kerstens; Thyago Celso Cavalcante Nepomuceno; Robin C. Sickles (Int. Trans. Oper. Res., 2020)