DENSITY OF SLOWLY OSCILLATING SOLUTIONS OF X(T)=-F(X(T-1))WALTHER HO.1981; J. MATH. ANAL. & APPL.; ISSN 0022-247X; USA; DA. 1981; VOL. 79; NO 1; PP. 127-140; BIBL. 10 REF.Article

ON A TRANSCENDENTAL EQUATION IN THE STABILITY ANALYSIS OF A POPULATION GROWTH MODEL.WALTHER HO.1976; J. MATH. BIOL.; GERM.; DA. 1976; VOL. 3; NO 2; PP. 187-195; BIBL. 7 REF.Article

A THEOREM ON THE AMPLITUDES OF PERIODIC SOLUTIONS OF DIFFERENTIAL DELAY EQUATIONS WITH APPLICATIONS TO BIFURCATIONWALTHER HO.1978; J. DIFFER. EQUATIONS; USA; DA. 1978; VOL. 29; NO 3; PP. 396-404; BIBL. 20 REF.Article

ON INSTABILITY, OMEGA -LIMIT SETS AND PERIODIC SOLUTIONS OF NONLINEAR AUTONOMOUS DIFFERENTIAL DELAY EQUATIONSWALTHER HO.1979; LECTURE NOTES MATH.; DEU; DA. 1979; NO 730; PP. 489-503; BIBL. 9 REF.Conference Paper

EXISTENCE OF CHAOS IN CONTROL SYSTEMS WITH DELAYED FEEDBACKAN DER HEIDEN U; WALTHER HO.1983; JOURNAL OF DIFFERENTIAL EQUATIONS; ISSN 0022-0396; USA; DA. 1983; VOL. 47; NO 2; PP. 273-295; BIBL. 13 REF.Article