@article {, title = {Online evaluation of the process noise covariance matrix for event-based state estimators}, journal = {International Journal for Numerical Methods in Engineering}, volume = {12064}, year = {2019}, month = {10/2019}, pages = {195 - 208}, issn = {0029-5981}, doi = {10.1002/nme.6131}, author = {Mart{\'\i}nez-Rey, Miguel and Carlos Santos and Nieto, Rub{\'e}n and Cristina Losada-Guti{\'e}rrez and Felipe Espinosa} }