@Article{IJRNC-07_Sandberg-Lanzon-Anderson,
 author       = "Sandberg, H. and Lanzon, A. and Anderson, B. D. O.",
 title        = "Model approximation using magnitude and phase criteria:
                 {I}mplications for model reduction and system identification",
 journal      = "International Journal of Robust and Nonlinear Control",
 volume       = 17,
 number       = "5-6",
 pages        = "435-461",
 doi          = "10.1002/rnc.1124",
 month        = "March/April",
 year         = 2007}