@article{10_4153_S0008439520000648,
     author = {Bhatia, Rajendra and Jain, Tanvi},
     title = {Variational principles for symplectic eigenvalues},
     journal = {Canadian mathematical bulletin},
     pages = {553--559},
     year = {2021},
     volume = {64},
     number = {3},
     doi = {10.4153/S0008439520000648},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439520000648/}
}