@article{MABA_2004_18_1-2_a3,
     author = {Andrey B. Andreev and Milena R. Racheva},
     title = {Variational {Aspects} of the {Mixed} {Formulation} for {Fourth-Order} {Elliptic} {Eigenvalue} {Problems}},
     journal = {Mathematica balkanica},
     pages = {41},
     publisher = {mathdoc},
     volume = {18},
     number = {1-2},
     year = {2004},
     url = {http://geodesic.mathdoc.fr/item/MABA_2004_18_1-2_a3/}
}