References

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3. Bill Medigovich. Mass Point Geometry or How to Paint a Triangle. Not published.
4. Mark Saul, Gilbert Kessler, Sheila Krilov, Lawrence Zimmerman. The New York City Contest Problem Book 1975-1984. Dale Seymour Publications, 1986.
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6. Melvin Hausner. A Vector Space Approach to Geometry, Dover Publications, 1998.
7. Dan Pedoe. Thinking Geometrically. The American Mathematical Monthly, pp 711-721 September 1970, Mathematical Association of America.
8. Harry Sitomer, Steven R. Conrad. Mass Points. Eureka now Crux Mathematicorum, pp 55-62 Vol. 2 No. 4 April 1976.
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13. George Berzsenyi, Stephen Maurer. The Contest Problem Book V, 1983-1988. Mathematical Association of America, 1997.
14. Loren Larson. Problem Solving Through Problems. pp 304-305, Springer-Verlag New York Inc., 1983.
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17. Murray Klamkin, Andy Liu. Three More Proofs of Routh's Theorem, Crux Mathematicorum. pp 199-203 Vol. 7 No. 6 June 1981.
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