Coordinated multisite observations of the variability of BL Lac

C. Brindle, J. Hough, J. Bailey, D.J. Axon, H. Schulz, S. Kikuchi, J.T. McGraw, W.J. Wisniewski, J. Fontaine, D. Nadesu, G. Clayton, E. Anderson, R.F. Jameson, D. Nadesu, G. Clayton, E. Anderson, R.F. Jameson, R. Smith, R.E. Wallis