@article{PFMT_2021_1_a1,
     author = {S. S. Girgel},
     title = {Solutions of the wave equation in parabolic rotary coordinates. {III.} {Spatiotemporal} wave packets of {Kummer{\textendash}Kummer} and {Tricomi{\textendash}Kummer} with the continuous angular index},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {13--18},
     year = {2021},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2021_1_a1/}
}