1. Asmussen, E., Heebøll-Nielsen, K. and Molbech, S. (1959). Methods for evaluation of muscle strength. Comm. Dan. Nat. Ass. Infant Parol., 5.
2. Secher, N. H., Rørsgaard, S. and Secher, O. (1978). Contralateral influence on recruitment of curarized muscle fibres during maximal voluntary extension of the legs. Acta Physiol. Scand., 103, 456–462.
3. Secher, N. H., Rube, N. and Molbech, S. (1981). The voluntary muscle contraction pattern in man, in J. -C. De Potter (ed.), Adapted Physical Activities, Editions de l’Université de Bruxelles, Bruxelles, pp. 225–236.