@article{RM_1992_47_3_a7,
     author = {S. A. Bychkov and S. V. Plotnikov and D. V. Yur'ev},
     title = {Folding of {Verma} modules over the {Lie} algebra $\mathfrak{sl}(2, \mathbb C)$ and hidden 
},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {169},
     publisher = {mathdoc},
     volume = {47},
     number = {3},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1992_47_3_a7/}
}