@article{18004,
      author       = "Ptaszyński, Andrzej and XIV. Congress of FIG Washington -
                      September 1974 Commission 6. Personal Paper",
      title        = "Method of Defining Quasi-Flat Surfases and its Aplication
                      to Determination of Surfases of Large Precast Units and
                      Mould Boxes  ",
      year         = "1974",
      note         = "1 sv., 2 obr. na příl., více autorů",
}