@article{espigule2013symmetry,
  author = {Espigul{\'e} Pons, Bernat},
  title = {Generalized self-contacting symmetric fractal trees},
  year = {2013},
  journal = {Symmetry: Culture and Science},
  volume = {24},
  number = {1--4},
  pages = {320--338},
  url = {https://journal-scs.symmetry.hu/content-pages/volume-24-numbers-1-4-pages-001-512-2013/}
}