An Iterative Method Applied to Correct the Actual Compressor Performance to the Equivalent Performance under the Specified Reference Conditions. - Yuanyuan Ma; Harald Fretheim; Erik Persson; Trond Haugen (CoRR, 2013)

Multivariate Detection of Transient Disturbances for Uni- and Multirate Systems. - Ines M. Cecilio; James R. Ottewill; Harald Fretheim; Nina F. Thornhill (IEEE Trans. Control. Syst. Technol., 2015)