1. On a functional differential equation;Fox;J. Inst. Math. Appl.,1971
2. The dynamics of a current collection system for an electric locomotive;Ockendon;in: Proceedings of the Royal Society of London Series A,1971
3. The functional differential equation y′(x)=ay(λx)+by(x);Carr;in: Proceedings of the Royal Society Edinburgh Section A,1974
4. The functional-differential equation y′(x)=ay(λx)+by(x);Kato;Bull. Amer. Math. Soc,1971
5. Numerical investigation of the pantograph equation;Liu;Appl. Numer. Math,1997