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Elliptic-integrals/README.md

@@ -7,6 +7,7 @@ Elliptic_Integrals::Elliptic(const double phi, const double k) computes elliptic
 ```cpp
 std::vector<double> Elliptic_Integrals::Elliptic(const double phi, const double k)
 ```
+In main.cpp displays a table for comparison with Irene A. Stegun, Milton Abramowitz, "Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables", page 613-618.
 
 **Parameters:**
 * 'phi': The argument in degrees. It must be in the range [0,90]