Kim, S., B.- seok Kim, D. Oh, and J. Lee. “An Effective Pre-Processing Technique for Robust ESPRIT-Based Single-Tone Frequency Estimation Against an I/Q Mismatch”. Elektronika Ir Elektrotechnika, vol. 21, no. 6, Dec. 2015, pp. 34-39, doi:10.5755/j01.eee.21.6.13757.