@article{SIGMA_2019_15_a74,
     author = {Alexey Slinkin and Alexander Varchenko},
     title = {Twisted de {Rham} {Complex} on {Line} and {Singular} {Vectors} in $\widehat{{\mathfrak{sl}_2}}$ {Verma} {Modules}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2019},
     volume = {15},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2019_15_a74/}
}