1. 2. Reeve J. E. and Tyrrell J. A. , “Intersection theory on a singular algebraic variety” (in preparation).
2. 1. Reeve J. E. and Tyrrell J. A. , “Intersection theory on a singular algebraic surface”, Proc. London Math. Soc. (in course of publication).
3. On the non‐specialisation of intersections on a singular variety
4. “La notion de multiplicité en Algèbre et en Géométrie Algébrique”;Samuel;J. de Math,1951
5. Variazione continua ed omotopia in geometria algebrica