@article{polák_balek_2008, 
  title={Plane waves in a relativistic, homogeneous and isotropic elastic continuum}, 
  volume={25}, 
  DOI={10.1088/0264-9381/25/4/045007}, 
  publisher={IOP Publishing}, 
  author={Polák and Balek}, 
  year={2008}, 
  month={Jan}
  }