@article{JSFU_2018_11_3_a1,
     author = {Evgeny K. Leinartas and Tatiana I. Yakovleva},
     title = {On formal solutions of the {H\"ormander{\textquoteright}s} initial-boundary value problem in the class of {Laurent} series},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {278--285},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2018_11_3_a1/}
}