Tarımer, İlhan, Adile Akpunar, and Rıza Gürbüz. 2008. “Design of a Direct Sliding Gearless Electrical Motor for an Ergonomic Electrical Wheelchair”. Elektronika Ir Elektrotechnika 83 (3): 75-80. https://doi.org/10.5755/j02.eie.11082.