Ergül, Ö., & Gurel, L. (2014). The multilevel fast multipole algorithm (MLFMA) for solving large-scale computational electromagnetics problems (First edition.). John Wiley & Sons.

Ergül, Özgür, and Levent Gurel. The Multilevel Fast Multipole Algorithm (MLFMA) for Solving Large-scale Computational Electromagnetics Problems. First edition. West Sussex, England: John Wiley & Sons, 2014.

Ergül, Özgür, and Levent Gurel. The Multilevel Fast Multipole Algorithm (MLFMA) for Solving Large-scale Computational Electromagnetics Problems. First edition. John Wiley & Sons, 2014.