@article{Alawdin:2005,
  author  = "P. Alawdin and G. Bryś",
  title   = "Simplified approach to the shakedown problem of I-cross-sections under two-directional bending",
  journal = "Civil and Environmental Engineering Reports : Special issue on the occasion of 70th birtday of prof. Romuald Świtka",
  volume  = "no 1",
  pages   = "19--31",
  year    = "2005",
  note    = "University of Zielona Góra Press, Zielona Góra",
}