https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.66.1370 (Publisher version)
Herz, A., Li, Z., & van Hemmen, J. (1991). Statistical mechanics of temporal association in neural networks with transmission delays. Physical Review Letters, 66(10), 1370-1373. doi:10.1103/PhysRevLett.66.1370.