@misc{synchronous+motor+prototype+with+an+external+rotor+using+permanent+magnets, author = {Ferková, Želmíra i Kaňuch, Ján}, title = {Synchronous motor prototype with an external rotor using permanent magnets}, journal = {Technical Transactions}, address = {Kraków}, publisher = {Wydawnictwo PK}, date = {2015}, number = {Y. 112, iss. 1-E} }