Well-scaled, a-posteriori error estimation for model order reduction of large second-order mechanical systems. ZAMM, (100)8:e201900186, Wiley, 2020. [PUMA: fis ians liste mult oa ubs_10007 ubs_10008 ubs_20011 ubs_20013 ubs_30115 ubs_30123 ubs_40177 ubs_40305 unibibliografie wos]