@article{Boller2021frei,
  author = {Boller and D'Acunto},
  title = {Structural design via form finding: Comparing Frei Otto, Heinz Isler and Sergio Musmeci},
  journal = {History of Construction Cultures},
  year = {2021},
  doi = {10.1201/9781003173434-168},
  url = {https://doi.org/10.1201/9781003173434-168}
}

@article{Salas2021gaud,
  author = {Salas and Bedoya and Adell},
  title = {Gaudí, a New Architectural Concept of Maximum Structural Efficiency: Catenary Vaults, Complex Ruled Surfaces, Branched Pillars and an Endless Innovative Strategies},
  journal = {12th International Conference on Structural Analysis of Historical Constructions},
  year = {2021},
  doi = {10.23967/sahc.2021.119},
  url = {https://doi.org/10.23967/sahc.2021.119}
}