Ziani, S. et al. 2023. Integration of Time-Frequency Analysis and Regularization Technique for Improved Identification of Fetal Electrocardiogram . International Journal of Online and Biomedical Engineering (iJOE). 19, 17 (Dec. 2023), pp. 170–177. DOI:https://doi.org/10.3991/ijoe.v19i17.42141.