• Robust nonlinear regression estimation in null recurrent time series 

      Bravo, Francesco; Li, Degui; Tjøstheim, Dag Bjarne (Journal article; Peer reviewed, 2021)
      In this article, we study parametric robust estimation in nonlinear regression models with regressors generated by a class of non-stationary and null recurrent Markov processes. The nonlinear regression functions can be ...