@article{
  author = {Alavinejhad, Mehdi, Ghodsi Hassanabad, Madjid, Ketabdari, Mohammadjavad, Nekooei, Masoud},
  title = {A new model as a damage index in an eigen value problem with application in health monitoring of offshore jacket platform},
  journal = {Journal of New Researches in Mathematics},
  year = {2021},
  volume = {7},
  number = {3},
  pages = {27-42},
  doi = {}
}