Two further paper On the functions defined by differential equations with an extension of the Puiseux polygon construction to these equations, and Singular solutions of ordinary differential equations appeared in 1889 and 1890 respectively.
Dalawang karagdagang papel Sa pag-andar na tinukoy sa pamamagitan ng kaugalian ng isang equation na may extension ng Puiseux polygon construction sa mga equation, at isahan solusyon ng mga karaniwang kaugalian equation ay lumitaw sa 1889 at 1890 ayon.