Edoardo Mosca, Giovanni Zappa. On the absence of positive realness conditions in self-tuning regulators based on explicit criterion minimization. Automatica, 23(2):259-260, 1987. [doi]
@article{MoscaZ87,
title = {On the absence of positive realness conditions in self-tuning regulators based on explicit criterion minimization},
author = {Edoardo Mosca and Giovanni Zappa},
year = {1987},
doi = {10.1016/0005-1098(87)90103-8},
url = {http://dx.doi.org/10.1016/0005-1098(87)90103-8},
researchr = {https://researchr.org/publication/MoscaZ87},
cites = {0},
citedby = {0},
journal = {Automatica},
volume = {23},
number = {2},
pages = {259-260},
}