@incollection{Oikawa11, author = {Yoshinori Oikawa}, title = {Tag Movement Direction Estimation Methods in an RFID Gate System}, booktitle = {Current Trends and Challenges in RFID}, publisher = {IntechOpen}, address = {Rijeka}, year = {2011}, editor = {Cornel Turcu}, chapter = {22}, doi = {10.5772/18549}, url = {https://doi.org/10.5772/18549} }