Xu, Y., Ma, X., & Ning, X. (2007). Estimation of ApEn for short-term HFECG based on multi-resolution analysis. Physica A, 376, 401-408. https://doi.org/10.1016/j.physa.2006.10.055
Chicago Style (17th ed.) CitationXu, Yinlin, Xiaofei Ma, and Xinbao Ning. "Estimation of ApEn for Short-term HFECG Based on Multi-resolution Analysis." Physica A 376 (2007): 401-408. https://doi.org/10.1016/j.physa.2006.10.055.
MLA (9th ed.) CitationXu, Yinlin, et al. "Estimation of ApEn for Short-term HFECG Based on Multi-resolution Analysis." Physica A, vol. 376, 2007, pp. 401-408, https://doi.org/10.1016/j.physa.2006.10.055.
Warning: These citations may not always be 100% accurate.