Click on the links where available to download the papers in postscript format. Unfortunately a few of the files are unavailable at the moment. Sorry about that.

H. Lamba and C.J. Budd, ``The scaling of Lyapunov exponents at nonsmooth bifurcations''. Phys. Rev. E 50 pp 84--90 (1994). Postscript file

H. Lamba, ``Regular, chaotic and unbounded behaviour in the elastic impact oscillator''. Physica D82 pp 117--135 (1995). Sorry, not currently available.

M. Grinfeld, P. Knight and H. Lamba, ``On the periodically perturbed logistic equation''. J. Phys. A 29 pp 8035--8040 (1996). Postscript file

H. Lamba, M. Grinfeld, S. McKee and R. Simpson, ``Subharmonic ferroresonance in an LCR circuit with hysteresis ''. IEEE Transactions on Magnetics 33 pp 2495--2500 (1997). Postscript file

H. Lamba, S. McKee and R. Simpson, ``The effect of circuit parameters on ferroresonant solutions in an LCR circuit ''. J. Phys. A. 31 pp 7065-7076 (1998). Postscript file

H. Lamba and A.M. Stuart, ``Convergence results for the MATLAB ode23 routine''. BIT, 38 pp 751--780 (1998). Postscript file

H. Lamba and A.M. Stuart, ``Convergence Proofs for Numerical IVP Software''. IMA Volumes in Mathematics and its Applications (1999). Postscript file

L. Piscitelli, M. Grinfeld, H. Lamba and R. Cross, ``On entry and exit in response to aggregate shocks''. Applied Economics Letters, 6 pp 569-572 (1999). Sorry, not currently available.

H. Lamba, ``Dynamical systems and adaptive timestepping in ODE solvers''. BIT, 40 pp 314--335 (2000). Postscript file

L. Piscitelli, R. Cross, M. Grinfeld, and H. Lamba, ``A test for strong hysteresis''. Computational Economics 15 pp 59-78 (2000). Sorry, not currently available.

H. Lamba. ``An adaptive timestepping algorithm for stochastic differential equations'' . J. Comp. Appl. Math 161 pp 417-430. PDF file

Frustration minimization, hysteresis and the El Farol problem (with Rod Cross, Michael Grinfeld and Anne Pittock) PDF file , "Singular Perturbations and Hysteresis", eds M.P. Mortell, R.E. O'Malley Jr., A. Pokrovskii and V. Sobolev. SIAM 2005. Pages 61--72.

A threshold model of investor psychology (with Rod Cross, Michael Grinfeld and Tim Seaman. Physica A 354 463--478) PDF file

An adaptive Euler-Maruyama scheme for SDEs: Convergence and stability (with Jonathan Mattingly and Andrew Stuart). IMA J. Num. Anal. 27 479--506. PDF file

The effective stability of adaptive timestepping ODE solvers (SIAM J. Num. Anal. 43 1950--1968) PDF file

Mean-square stability of an adaptive SDE solver (with Tim Seaman, J. Comp. App. Math. 194 245--254) PDF file

A mean-field model of investor behaviour (with Rod Cross and Michael Grinfeld J. Phys.: Conf. Ser. 55 55--62) PDF file

Stylized facts from a threshold-based heterogeneous agent model (with Rod Cross, Michael Grinfeld and Tim Seaman ). Eur. Phys. J. B 57 213--218. PDF file

Market statistics of a psychology-based heterogeneous agent model (with Tim Seaman), Int. J. Theor. Appl. Fin.i 11 pp 717-737, 2008 PDF file

Rational Expectations, psychology and inductive learning via moving thresholds (with Tim Seaman). Phys. A. 387 pp 3904-3909, 2008 PDF file

Hysteresis and Economics (with Rod Cross and Michael Grinfeld , IEEE Control Systems Magazine 29 pp30-43, 2009. PDF file

A queueing theory description of fat-tailed price returns in imperfect financial markets (Eur. Phys. J. B 77 pp297-304 (2010)). PDF file

A Mesoscopic Market Model with Hysteretic Agents (with Rod Cross and Michael Grinfeld --- to appear Discrete and Continuous Dynamical Systems) PDF file

Reflections on Soros: Mach, Quine, Arthur and Far-from-Equilibrium Dynamics (with Rod Cross, Harold Hutchinson and Doug Strachan). Journal of Economic Methodology 20, pp 357-367 (2013) PDF file