I'm trying to find a location in the Internet where I can download (for free) the following DE paper: G´eronimi C, Feix M R and Leach P G L, Exponential Nonlocal Symmetries and Nonnormal Reduction of Order, J. Phys. A: Math. Gen. 34 (2001), 10109–10117. I know it exists here: http://www.iop.org/EJ/abstract/0305-4470/34/47/315 but it's not free. If anybody knows such a location or has this paper, can you please answer to this thread. Thanx in advance, Max.