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ZernovA. E. Qualitative Investigation of the Singular Cauchy Problem $\sum\limits_{k = 1}^n {(a_{k1} T + a_{k2} x)(x’)^k = b_1 T + b_2 X + f(t,x,x’),x(0) = 0}$. Ukr. Mat. Zhurn. 2003, 55, 1419-1424.