Prior A., Kleptsyna M., Milheiro-Oliveira P.. On maximum likelihood estimation of the drift matrix of a degenerated O–U process. Statistical Inference for Stochastic Processes. 2016:1-22.Edit

Prior A., Kleptsyna M., Milheiro-Oliveira P.. On maximum likelihood estimation of the drift matrix of a degenerated O–U process. Statistical Inference for Stochastic Processes. 2017;20:57-78.Edit