HORDESKI, Michael F.. Dictionary of energy efficiency technologies. USA : CRC Press, 2004. Dostupné online.ISBN 0824748107. S. 175-176.
GRONDZIK, Walter T., Alison G. Kwok, Benjamin Stein, John S. Reynolds Mechanical and Electrical Equipment for Buildings, 11th Ed.. USA : John Wiley & Sons, 2009. Dostupné online.ISBN 0470577789. S. 555-556.
Light Right: A practising engineer's manual on energy-efficient lighting. [s.l.] : TERI Press, 2004. Dostupné online.ISBN 8179930440. S. 19-20.