Can variability account for apparent age spreads in OB association colour-magnitude diagrams

Burningham, B., Naylor, T., Littlefair, S.P. and Jeffries, R.D. (2005) Can variability account for apparent age spreads in OB association colour-magnitude diagrams. Monthly Notices of the Royal Astronomical Society (MNRAS), 363 (4). pp. 1389-1397. ISSN 0035-8711