@article{AFM_2006_31_2_a5,
     author = {Michael Bildhauer and Martin Fuchs},
     title = {Higher order variational problems on two-dimensional domains},
     journal = {Annales Fennici Mathematici},
     pages = {349--362},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2006_31_2_a5/}
}