1. On selecting models for nonlinear time series;Judd;Physica D,1995
2. M. Small, K. Judd, M. Lowe, S. Stick, Is breathing in infants chaotic? Dimension estimates for respiratory patterns during quiet sleep, J. Appl. Physiol., to appear.
3. Linear modelling techniques detect periodic respiratory behaviour in infants during regular breathing in quiet sleep;Small;Am. J. Resp. Crit. Care Med.,1996
4. Testing for nonlinearity in time series: The method of surrogate data;Theiler;Physica D,1992
5. Detecting nonlinearity in experimental data;Small;Int. J. Bifurc. & Chaos,1998