@article{article1911,
  title = {Effect of pier-collar system on flow characteristics of composite hydraulic structure},
  author = {QASIM, R.M. and AL-ASADI, K. and ABDULHUSSEIN, I.A. and MAATOOQ, Q.A.},
  journal = {Sigma Journal of Engineering and Natural Sciences},
  year = {2025},
  volume = {43},
  pages = {2066-2083},
  doi = {10.14744/sigma.2025.1911}
}