I was reading this paper by Cerna et al. (2018)1. In the paper there are only CPLEX-solvable equations given by the authors and the results.
How valuable is this paper, and what is its quality? Can we just provide equations, tests, and results in a problem and publish a paper in a good journal?
Doesn't it require to prove the correctness of these equations related to the problem?
 Cerna, F. V. et al. (2018). Optimal Delivery Scheduling and Charging of EVs in the Navigation of a City Map. IEEE Transactions on Smart Grid. 9(5):4815-4827.