Existence and comparison theorems for algebraic Riccati equations and Riccati differential and difference equations
J. Dynam. Control Systems 2 (1996), no. 4, 529--547.
BibTex references
@Article\{FJ96,
author = "Freiling, Gerhard and Jank, Gerhard",
title = "Existence and comparison theorems for algebraic Riccati equations and Riccati differential and difference equations",
journal = "J. Dynam. Control Systems",
number = "4",
volume = "2",
pages = "529--547",
year = "1996",
}