Differential Invariants Under the Inversion Group (Classic Reprint)

Invariants of Quadratic Differential Forms (Paperback or Softback)

Invariants of Quadratic Differential Forms, Paperback by Wright, Joseph Edmun...

Invariants Of Systems Of Linear Differential Equations by Wilczynski, Ernest ...

Symmetry, Representations, and Invariants Graduate Texts in Mathematics Wallach

Invariants Of Systems Of Linear Differential Equations by Wilczynski, Ernest ...

CLASSICAL GROUPS THEIR INVARIANTS AND REPRESENTATIONS - WEYL - HB W/ DUSTJACKET