TY - JOUR TI - A NOTE ON THE HOMOTOPY PERTURBATION METHOD AU - He Ji-Huan JN - Thermal Science PY - 2010 VL - 14 IS - 2 SP - 565 EP - 568 PT - Article AB - The homotopy perturbation method admits some unknown parameters in the obtained series solutions, which can be identified after few iteration steps using the method of least squares. The solution procedure of the so-called optimal homotopy asymptotic method follows the same way.