Sharipov, R. A. (1998). Effective procedure of point-classification for the equation $y'' = P + 3 Q y' + 3 R {y'}^2 + S {y'}^3$.
Cita Chicago (17th ed.)Sharipov, R. A. Effective Procedure of Point-classification for the Equation $y'' = P + 3 Q Y' + 3 R {y'}^2 + S {y'}^3$. 1998.
Cita MLA (9th ed.)Sharipov, R. A. Effective Procedure of Point-classification for the Equation $y'' = P + 3 Q Y' + 3 R {y'}^2 + S {y'}^3$. 1998.
Atenció: Aquestes cites poden no estar 100% correctes.