The following publications are possibly variants of this publication:
- Estimating the Strength and Direction of Functional Coupling in the Lamprey Spinal CordTim Kiemel, Kevin M. Gormley, Li Guan, Thelma L. Williams, Avis H. Cohen. jcns, 15(2):233-245, 2003. [doi]
- Intersegmental phase lags in the lamprey spinal cord: Experimental confirmation of the existence of a boundary regionThelma L. Williams, Karen A. Sigvardt. jcns, 1(1-2):61-67, 1994. [doi]
- The Calculation of Frequency-Shift Functions for Chains of Coupled Oscillators, with Application to a Network Model of the Lamprey Locomotor Pattern GeneratorThelma L. Williams, Graham Bowtell. jcns, 4(1):47-55, 1997.