Chan, Y.C., Cohen, D.D., Hawas, O., Stelcer, E., Simpson, R., Denison, L., Wong, N., Hodge, M., Com-ino, E. and Carswell, S. (2007) Apportionment of sources of fine and coarse particles in four major Australian cities by positive matrix factorisation. Atmospheric Environment, 42, 374-389.