@article{brzostowski_krasiński_2014, 
  title={The jump of the Milnor number in the X 9 singularity class}, 
  volume={12}, 
  DOI={10.2478/s11533-013-0351-4}, 
  abstractNote={<jats:title>Abstract</jats:title><jats:p>The jump of the Milnor number of an isolated singularity f 0 is the minimal non-zero difference between the Milnor numbers of f 0 and one of its deformations (f s). We prove that for the singularities in the X 9 singularity class their jumps are equal to 2.</jats:p>}, 
  publisher={Walter de Gruyter GmbH}, 
  author={Brzostowski and Krasiński}, 
  year={2014}, 
  month={Jan}
  }