By Simon F. Tolić-Nørrelykke, Erik Schäffer, Jonathon Howard, Francesco S. Pavone, Frank Jülicher, Henrik Flyvbjerg.
Online text: arxiv.org/abs/physics/0603037
Cited passages: Simon F. Tolić-Nørrelykke et al., Calibration of optical tweezers with positional detection in the back-focal-plane (2006), abstract: combined thermal-spectrum and stage-driven calibration.