Before revision: Professor Ionel's research includes the electric machines, wind turbines, power system, applications of power electronics, smart buildings.Dan Ionel, ORCID researcher profile, retrieved 2022-09-16.
After revision: Professor Ionel's research includes the electric machines, wind turbines, power system, applications of power electronics, smart buildings.Dan Ionel, ORCID researcher profile, accessed 2022-09-16.