@article{TM_2019_306_a7,
     author = {S. Yu. Dobrokhotov and V. E. Nazaikinskii},
     title = {Nonstandard {Lagrangian} {Singularities} and {Asymptotic} {Eigenfunctions} of the {Degenerating} {Operator} $-\frac{d}{dx}D(x)\frac{d}{dx}$},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {83--99},
     publisher = {mathdoc},
     volume = {306},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2019_306_a7/}
}