@article{AIHPC_2020__37_4_955_0,
     author = {Bellido, Jos\'e C. and Cueto, Javier and Mora-Corral, Carlos},
     title = {Fractional {Piola} identity and polyconvexity in fractional spaces},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {955--981},
     publisher = {Elsevier},
     volume = {37},
     number = {4},
     year = {2020},
     doi = {10.1016/j.anihpc.2020.02.006},
     mrnumber = {4104831},
     zbl = {1442.35445},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/j.anihpc.2020.02.006/}
}