@article{JSFU_2011_4_3_a14,
     author = {Natalia A. Feodorova},
     title = {Modeling for reinforced with isogonal trajectories ring-shaped lamels in polar coordinate system},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {400--405},
     publisher = {mathdoc},
     volume = {4},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2011_4_3_a14/}
}