This is the readme for the model associated with the paper

Komendantov AO, Kononenko NI (1996) Deterministic chaos in
mathematical model of pacemaker activity in bursting neurons of snail,
Helix pomatia. J Theor Biol 183:219-30

The XPP model was contributed by Dr Komendantov. XPP is available

Example usage under linux:
Start with a command like

xppaut jtb-kk.ode

Select Initalconds -> Go with the mouse.  After a short time you
should get this graph


which replicates figure 9 A from the paper.