1. First line nurse managers: optimizing the span of control;Journal of Nursing Administration,1988
2. First-line managers. Measuring their span of control;Nursing Management,1998
3. Barrasa, A., West, M.A. and Gil, F. (2007), “Is there an optimal size for health-care teams? Effects on team climate for innovation and performance”, in Richter, P., Peiró, J.M. and Schaufeli, W.B. (Eds), Psychosocial Resources in Health Care Systems, Rainer Hampp Verlag, München, pp. 51-65.
4. Determinants of span of control;The American Journal of Sociology,1967