Joo-Seok Kim Myung-Sun Baek Yong-Tae Lee Kyung-Seok Kim The optimal placement of radio stations in coexisting DRM+ and analog FM systems. 738-746 2013 59 IEEE Trans. Consumer Electron. 4 https://doi.org/10.1109/TCE.2013.6689684 db/journals/tce/tce59.html#KimBLK13