A nonmeasurable set as a union of a family of increasing well ordered measurable sets. González-Hernández, J. & Villarreal, C. E Morfismos, 9(1):35--38, Publicaciones del Departamento de Matemáticas del CINVESTAV, 2005.
bibtex   
@article{gonzalez2005nonmeasurable,
  title={A nonmeasurable set as a union of a family of increasing well ordered measurable sets},
  author={Gonz{\'a}lez-Hern{\'a}ndez, Juan and Villarreal, C{\'e}sar E},
  journal={Morfismos},
  volume={9},
  number={1},
  pages={35--38},
  year={2005},
  publisher={Publicaciones del Departamento de Matemáticas del CINVESTAV}, 
   keywords = {pisis}
}

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