@article{TIMM_2008_14_3_a7,
     author = {V. P. Vereshchagin and Yu. N. Subbotin and N. I. Chernykh},
     title = {Longitudinal-vortex unit vector fields from the class of axially symmetric fields},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {92--98},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2008_14_3_a7/}
}