@article{NUMA_1986__48_133078,
     author = {F. Brezzi and M. Cornalba and A. Di Carlo},
     title = {How to {Get} around a {Simple} {Quadratic} {Fold.}},
     journal = {Numerische Mathematik},
     pages = {417--428},
     publisher = {mathdoc},
     volume = {48},
     year = {1986},
     zbl = {0623.65059},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__48_133078/}
}