Soft Decision Decoding of Binary Linear Block Codes Using the Bfgs-Method Klaus Ritter; Stefan Schaffler; Thomas F. Sturm — 1998 The Yugoslav Journal of Operations Research
Parameter Estimation in Linear Regression Models With Stationary Arma(p,q)-Errors Using Automatic Differentiation Herbert Fischer; Stefan Schaffler; Hubert Warsitz — 1992 The Yugoslav Journal of Operations Research