1. J. Angeles, Fundamentals of Robotic Mechanical Systems: Theory, Methods, and Algorithms. Number 124 in Mechanical Engineering Series, 4th edn. (Springer, Berlin, 2013). ISBN 9783319018508
2. R.C. Balescu, Equilibrium and Non-Equilibrium Statistical Mechanics, 1st edn. (Wiley, New York, 1975). ISBN 9780471046004
3. S.L. Campbell, Singular Systems of Differential Equations II. Research Notes in Mathematics Series (Pitman Publishing, Chapman & Hall/CRC, London, 1982). ISBN 9780273085164
4. S.L. Campbell, Singular Systems of Differential Equations I. Research Notes in Mathematics Series (Pitman Publishing, Chapman & Hall/CRC, London, 1980). ISBN 9780273084389
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