If you use my HOF software in publications, and need a literature reference, use this one:
Oksanen, J. & Minchin, P.R. (2002) Continuum theory revisited: what shape are species responses along ecological gradients? Ecological Modelling 157, 119-129.
Please give the url of my homepage http://cc.oulu.fi/~jarioksa/ as the source of the software, or refer directly to some of the relevant web pages, if that practice is encouraged by the journal.