@article{ZNSL_2012_401_a7,
     author = {M. Ya. Mazalov},
     title = {A criterion for approximability by harmonic functions in {Lipschitz} spaces},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {144--171},
     year = {2012},
     volume = {401},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2012_401_a7/}
}