The Adjusted Spherical Frontier Model with weight restrictions

► A DEA parametric model designed to distribute a total fixed input to a set of DMUs. ► First paper with a DEA parametric model capable to include weight restrictions. ► It generalizes the Adjusted Spherical Frontier Model. ► A case study using real data illustrates the features of the model. ► Earlier version won Best Paper Award at Brazilian OR Symposium, 2010.