@article{
  author = {Gheisarnezhad, Meysam, Mojallali, Hamed},
  title = {Fractional Order PID Controller Design for Level Control of Three Tank System Based on Improved Cuckoo Optimization Algorithm},
  journal = {Journal of Intelligent Procedures in Electrical Technology},
  year = {2015},
  volume = {5},
  number = {20},
  pages = {55-66},
  doi = {}
}