1.
Goodman GS, Yorke JA. Misbehaviour of Solutions of the Differential Equation $y’=f(x,y)+\varepsilon$ when the Right Hand Side is Discontinuous. Math. Scand. [Internet]. 1970 Jun. 1 [cited 2024 Apr. 28];27:72-6. Available from: https://www.mscand.dk/article/view/10988