@article{
  author = {Pikkala, Vijaya Laxmi, Edadasari, Girija Bhavani},
  title = {A Study on State Dependent Accessible and Second Optional Service Queue with Impatient and Feedback Customers},
  journal = {International Journal of Mathematical Modeling & Computations},
  year = {2018},
  volume = {8},
  number = {4},
  pages = {207-216},
  doi = {}
}