1. The natural history of motoneuron loss in amyotrophic lateral sclerosis
2. Brooks BR, Sanjak M, Belden DS, Waclawik AJ. Motor neurone disease: Basic designs, sample sizes and pitfalls. In: RJ Guiloff, ed. Clinical Trials in Neurology. London: Springer Verlag, 2001: 427–448.
3. A comparison of three measures of disease progression in ALS
4. Sanjak M, Belden DS, Cook T, Brooks BR. Muscle strength measurement. In: RD Lane, ed. Handbook of Muscle Disease. New York: Marcel Dekker, 1996: 19–31.