Surrogate relaxation of a fuzzy multidimensional 0-1 knapsack model by surrogate constraint normalization rules and a methodology for multi-attribute project portfolio selection. Bas, E. Engineering Applications of Artificial Intelligence, 25(5):958--970, August, 2012.
bibtex   
@article{Bas12,
  author = {Esra Bas},
  title = {{Surrogate relaxation of a fuzzy multidimensional 0-1 knapsack model 
  by surrogate constraint normalization rules and a methodology for multi-attribute project portfolio selection}},
  journal = {Engineering Applications of Artificial Intelligence}, 
  volume = {25},
  number = {5},
  pages = {958--970},
  month = {August},
  year = {2012}
}

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