@article{COMIM_2012_20_2_a0,
     author = {Wu, Faen and Zhao, Xinnuan},
     title = {A new variational characterization of compact conformally flat 4-manifolds},
     journal = {Communications in Mathematics},
     pages = {71--77},
     year = {2012},
     volume = {20},
     number = {2},
     mrnumber = {3032804},
     zbl = {06165035},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/COMIM_2012_20_2_a0/}
}