@article{TIMM_2010_16_4_a12,
     author = {V. P. Vereshchagin and Yu. N. Subbotin and N. I. Chernykh},
     title = {The class of solenoidal planar-helical vector fields},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {128--143},
     year = {2010},
     volume = {16},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2010_16_4_a12/}
}