@article{IVM_1992_7_a5,
     author = {M. P. Lenyuk and N. P. Oleinik},
     title = {A~class of hybrid integral transformations {(Fourier--Bessel--Fourier--} \dots {--Bessel--Fourier)} on a~polar axis with $2n$ conjugate points},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {36--45},
     publisher = {mathdoc},
     number = {7},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1992_7_a5/}
}