@article{10_21136_CPM_1985_118237,
     author = {Brunovsk\'y, Pavol and Mallet-Paret, John},
     title = {Switchings of optimal controls and the equation $y^{(4)}+\vert y\vert^{\alpha}\,sign\,y=0$, $0<\alpha <1$},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {302--313},
     publisher = {mathdoc},
     volume = {110},
     number = {3},
     year = {1985},
     doi = {10.21136/CPM.1985.118237},
     mrnumber = {808081},
     zbl = {0583.49011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1985.118237/}
}