https://confluence.slac.stanford.edu/spaces/CAL/pages/86674278/Effect+of+calorimeter+pedestals+drift+on+energy+measurement+during+3C454.3+TOO
Effect of calorimeter pedestals drift on energy measurement during 3C454.3 TOO - Calorimeter - SLAC...
https://www.bu.edu/blazars/VLBA_GLAST/3c454.html
3C454.3