@article{202404.0080, doi = {10.20944/preprints202404.0080.v1}, url = {https://doi.org/10.20944/preprints202404.0080.v1}, year = 2024, month = {April}, publisher = {Preprints}, author = {León Beleña Lamor and Ernesto Curbelo Benitez and Luca Martino and Valero Laparra Perez-Muelas}, title = {Second Moment/Order Approximations by Kernel Smoothers with Application to Volatility Estimation}, journal = {Preprints} }