This work was completed during my internship with Shell in the summer of 2011.
The results were produced based on the previous C library for isotropic MVA.
We thank Shell International Exploration and Production Company for
permission to publish this paper. Yunyue Li thanks the sponsor of the Stanford
Exploration Project for their financial support. Yunyue Li dedicates her special
thanks to Peng Shen for his previous work and his help throughout her internship.