@ARTICLE{c.a.monje2004onfractionalpi, TITLE = {On Fractional PI Controllers: Some Tuning Rules for Robustness to Plant Uncertainties}, JOURNAL = {Nonlinear Dynamics}, VOLUME = {38}, NUMBER = {1}, PAGES = {369 - 381}, YEAR = {2004}, AUTHOR = {C.A. Monje, A.J. Calderón, B.M. Vinagre, Y.Q. Chen, V. Feliu} }