Abstract 

MILP instances (in LP format) of the paper

Alberto Borghetti

A Mixed-Integer Linear Programming Approach for the Computation of the Minimum-Losses Radial Configuration of Electrical Distribution Networks

IEEE Transactions on Power Systems (Issue: 3, Aug. 2012, pp. 1264-1273)

https://doi.org/10.1109/TPWRS.2012.2184306

previously available at http://www.lisep.ing.unibo.it/optree.zip 

Instructions: 

MILP instances (in LP format) of the paper

Alberto Borghetti

A Mixed-Integer Linear Programming Approach for the Computation of the Minimum-Losses Radial Configuration of Electrical Distribution Networks

IEEE Transactions on Power Systems (Issue: 3, Aug. 2012, pp. 1264-1273)

https://doi.org/10.1109/TPWRS.2012.2184306

previously available at http://www.lisep.ing.unibo.it/optree.zip