Here is a list of references on High intensity interval training provided by Michael McCann posted on the Supertraining discussion group-
Billat, L.V. (2001). Interval training for performance: a scientific and
empirical practice. Sports Medicine, 31 (2), 75-90.
Dawson, et al. (1998). Changes in performance, muscle metabolites, enzymes
and fiber types after short sprint training. European Journal of Applied
Physiology, 78, 163-169.
Laursen, P.B. & Jenkins, D.G. (2002). The scientific basis for
high-intensity interval training. Sports Medicine, 32 (1), 53-73.
Tomlin, D.L. & Wenger, H.A. (2001). The relationship between aerobic
fitness and recovery from high intensity intermittent exercise. Sports Medicine, 31
(1), 1-11.
Parra J. et al. (2000). The distribution of rest periods affects
performance and adaptations of energy metabolism induced by high intensity training in
human muscle. Acta Physiologica Scandinavica, 169, 157-165.
MacDougall, J.D. et al. (1998). Muscle performance and enzymatic
adaptations to sprint interval training. Journal of Applied Physiology, 84, 2138-2142.