Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Koharagi H. and Tahara K. and Ishii Y. and Suzuki S.,Application and Evaluation of Commutation Performance with an Exceptional Armature Winding Form for Small Universal Motors.,IEEJ Transactions on Industry Applications,09136339,The Institute of Electrical Engineers of Japan,1995,115,4,488-494,https://cir.nii.ac.jp/crid/1390282679631812480,https://doi.org/10.1541/ieejias.115.488