@article{705900,
      recid = {705900},
      author = {Figueiredo, Djairo Guedes de, and Marcos do Ó, João, and  Tomei, Carlos, and Ruf, Bernhard,},
      title = {Analysis and topology in nonlinear differential equations  a tribute to Bernhard Ruf on the occasion of his 60th  birthday / [electronic resource] :},
      pages = {1 online resource (x, 466 pages) :},
      url = {http://library.usi.edu/record/705900},
      doi = {https://doi.org/10.1007/978-3-319-04214-5},
}