TY  - JOUR
AU  - Hammond
TI  - A simple Proof of the Existence of Irreducible Invariants of Degrees 20 and 30 for the Binary Seventhic
JO  - Mathematische Annalen
PY  - 1890
SP  - 255
EP  - 261
VL  - 36
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1890__36_157495/
ID  - MAN_1890__36_157495
ER  -