Reducible functional differential equations.
Reduction of the modified Poincaré differential equation to Birkhoff matrix form.
Remark in connection with an article of G. G. Hamedani: “Global existence of solutions of certain functional-differential equations” [Časopis Pěst. Mat. 106 (1981), 48-51]
Remark to transformations of functional-differential equations of the first order
Remark to transformations of linear differential and functional-differential equations
For linear differential and functional-differential equations of the -th order criteria of equivalence with respect to the pointwise transformation are derived.
Retarded differential equations by the extrapolation method. (Équations différentielles à retard par la méthode d'extrapolation.)