@article{VMJ_2005_7_4_a1,
     author = {A. L. Goncharov and S. B. Klimentov and Z. D. Usmanov},
     title = {An analogue of {Liouville's} theorem for a class of systems of {Cauchy-Riemann} type with singular coefficients},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {7--16},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2005_7_4_a1/}
}