Liu Wen, A Nowhere Differentiable Continuous Function Constructed by Infinite Products, The American Mathematical Monthly, Vol. 109, No. 4 (Apr., 2002), pp. 378-380 ...

The data from a lung function study on 2209 white 45–54 year old South African gold miners in 1968–71 and at a five year follow up examination, were analysed to establish the actual loss of lung ...