@article{MO_2001_19_4_a3,
     author = {V. V. Tsukerman},
     title = {Methods of math physics. {Nabla-calculus} {I}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {38--48},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2001_19_4_a3/}
}