TY  - JOUR
T1  - On the Interchange of the Variables in Certain Linear Differential Operators. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 46
SP  - 358
EP  - 362
PY  - 1889/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1889.0043
M3  - doi:10.1098/rspl.1889.0043
AU  - Elliott, E.
ER  -