@article{IM2_1987_29_2_a5,
     author = {D. A. Mit'kin},
     title = {An estimate of the number of terms in {Waring's} problem for polynomials of general form},
     journal = {Izvestiya. Mathematics},
     pages = {371--406},
     year = {1987},
     volume = {29},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1987_29_2_a5/}
}