TY - JOUR T1 - Invariants, Covariants, and Quotient-Derivatives Associated with Linear Differential Equations JF - Philosophical Transactions of the Royal Society of London. A (1887-1895) VL - 179 SP - 377 EP - 489 PY - 1888/01/01/ UR - http://dx.doi.org/10.1098/rsta.1888.0015 M3 - doi:10.1098/rsta.1888.0015 AU - Forsyth, A. ER -