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UNIVERSAL METRIC PROPERTIES OF AN APPROXIMATE POINCARE MAP FOR DUFFING'S EQUATION WITH NEGATIVE STIFFNESSHU B; MAO JM.1983; PHYSICAL REVIEW. A. GENERAL PHYSICS; ISSN 0556-2791; USA; DA. 1983; VOL. 27; NO 3; PP. 1700-1701; BIBL. 8 REF.Article

RATIONAL APPROXIMATION FOR NON-LINEAR ORDINARY DIFFERENTIAL EQUATIONSPRENDERGAST KH.1982; LECT. NOTES MATH.; ISSN 0075-8434; DEU; DA. 1982; NO 925; PP. 369-373; BIBL. 3 REF.Conference Paper

SUBHARMONIC SOLUTIONS OF THE DUFFING EQUATION WITH LARGE NON LINEARITY.RIGANTI R.1978; INTERNATION. J. NON-LINEAR MECH.; G.B.; DA. 1978; VOL. 13; NO 1; PP. 21-31; ABS. FR. ALLEM.; BIBL. 10 REF.Article

A DUFFING EQUATION WITH MORE THAN 20 BRANCH POINTSBECKER KH; SEYDEL R.1981; LECT. NOTES MATH.; ISSN 0075-8434; DEU; DA. 1981; NO 878; PP. 98-107; BIBL. 13 REF.Conference Paper

BOUNDEDNESS AND CONVERGENCE OF SOLUTIONS OF DUFFING'S EQUATION.SHIRAIWA K.1977; NAYOGA MATH. J.; JAP.; DA. 1977; VOL. 66; PP. 151-166; BIBL. 4 REF.Article

ABOUT THE DOMAIN OF EXISTENCE OF REAL THIRD-ORDER SUBHARMONIES OF THE DUFFING EQUATION.PLATO G.1977; Z. ANGEW. MATH. MECH.; DTSCH.; DA. 1977; VOL. 57; NO 3; PP. 187-188; BIBL. 11 REF.Article

EXACT SOLUTION OF A DIFFERENCE APPROXIMATION TO DUFFING'S EQUATIONPOTTS RB.1981; J. AUST. MATH. SOC., SER. B, APPL. MATH.; ISSN 0334-2700; AUS; DA. 1981; VOL. 23; NO 1; PP. 64-77; BIBL. 3 REF.Article

On the transmission from regular to chaotic behaviour in the Duffing oscillatorVAN DOOREN, R.Journal of sound and vibration. 1988, Vol 123, Num 2, pp 327-339, issn 0022-460XArticle

On the occurrence of chaos in Duffing's oscillatorAWREJCEWICZ, J.Journal of sound and vibration. 1986, Vol 108, Num 1, pp 176-178, issn 0022-460XArticle

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A new philosophy for stochastic equivalent linearizationCASCIATI, F; FARAVELLI, L; HASOFER, A. M et al.Probabilistic engineering mechanics. 1993, Vol 8, Num 3-4, pp 179-185, issn 0266-8920Article

Phase increment analysis of damped Duffing oscillatorsLEUNG, A. Y. T; FUNG, T. C.International journal for numerical methods in engineering. 1989, Vol 28, Num 1, pp 193-209, issn 0029-5981Article

Nonstationary response analysis of a duffing oscillator by the Wiener-Hermite expansion methodORABI, I. I; AHMADI, G.Journal of applied mechanics. 1987, Vol 54, Num 2, pp 434-440, issn 0021-8936Conference Paper

GENERALIZED FOURIER SERIES AND NON-LINEAR OSCILLATORROYCHOUDHURY RK.1979; INDIAN J. PURE APPL. MATH.; IND; DA. 1979; VOL. 10; NO 9; PP. 1127-1133; BIBL. 9 REF.Article

HARMONIC SOLUTIONS OF DUFFING'S EQUATION FORCED BY PERIODIC IMPULSES.FINIZIO NJ.1977; BUL. INST. POLITEH. IASI, 1; ROM; DA. 1977; VOL. 23; NO 3-4; PP. 53-60; ABS. RUM; BIBL. 4 REF.Article

STABILIZATION OF COWELL'S CLASSICAL FINITE DIFFERENCE METHOD FOR NUMERICAL INTEGRATION OF THE FREE DUFFING EQUATION.VAN DOOREN R.1976; IN: TRANSFORM. PONCTUELLES ET APPL. COLLOQ. INT. C.N.R.S.: TOULOUSE; 1973; PARIS; C.N.R.S.; DA. 1976; PP. 275-283; ABS. FR.; BIBL. 12 REF.Conference Paper

A STUDY ON THE FORCED VIBRATIONS OF A CLASS OF NON LINEAR SYSTEMS WITH APPLICATION TO THE DUFFING EQUATION. I. ANALYTICAL TREATMENT.NOCILLA S.1976; MECCANICA; ITAL.; DA. 1976; VOL. 11; NO 1; PP. 11-17; ABS. ITAL.; BIBL. 24 REF.Article

PERCUSSIONS EN MECANIQUE NON LINEAIRE SUR CERTAINES SOLUTIONS PERIODIQUES DE PHENOMENES NON LINEAIRES EXCITES PAR DES PERCUSSIONSFAURE R.1982; MECANIQUE. MATERIAUX. ELECTRICITE; ISSN 0025-6439; FRA; DA. 1982; NO 394-395; PP. 486-492; ABS. ENG; BIBL. 8 REF.Article

PARTICULARITES DE LA MANIFESTATION DE RESONANCES SUBHARMONIQUES ET SUBULTRAHARMONIQUES DANS LES SYSTEMES DECRITS PAR L'EQUATION DE DUFFINGKRYUKOV VI; SEREDOVICH GI.1982; MEH. TVERD. TELA; ISSN 0572-3299; SUN; DA. 1982; NO 5; PP. 16-21; BIBL. 6 REF.Article

STABILITE DES VIBRATIONS STATIONNAIRES D'UN SYSTEME DE DUEFFING A CARACTERISTIQUES DECROISSANTES. II. STABILITE DANS LE CAS DE PETITES PERTURBATIONSTONDL A.1976; STROJN. CAS.; CESKOSL.; DA. 1976; VOL. 27; NO 6; PP. 577-589; ABS. ANGL. RUSSE; BIBL. 4 REF.Article

A STUDY ON THE FORCED VIBRATIONS OF A CLASS OF NONLINEAR SYSTEMS, WITH APPLICATION TO THE DUFFING EQUATION. II. NUMERICAL TREATMENT.RIGANTI R.1976; MECCANICA; ITAL.; DA. 1976; VOL. 11; NO 2; PP. 81-88; ABS. ITAL.; BIBL. 10 REF.Article

MINIMAL ORDER LUENBERGER OBSERVER FOR DUFFING'S EQUATIONAULOGE JY.sdMECO '79. MEASUREMENT AND CONTROL. COMPUTER APPLICATIONS IN INDUSTRY. INTERNATIONAL SYMPOSIUM/1979/GRENOBLE; USA/CAN/CHE; ANAHEIM CA: ACTA PRESS/CALGARY AB: ACTA PRESS/ZURICH: ACTA PRESS; DA. S.D.; PP. 109-112; BIBL. 6 REF.Conference Paper

Application of non-Gaussian closure to the nonstationary response of a Duffing oscillatorQIANG LIU; DAVIES, H. G.International journal of non-linear mechanics. 1988, Vol 23, Num 3, pp 241-250, issn 0020-7462Article

Etude des mouvements périodiques asymétriques des systèmes dynamiques symétriquesFEJGIN, M. I.Izvestiâ Akademii nauk SSSR. Mehanika tverdogo tela. 1983, Num 4, pp 95-100, issn 0572-3299Article