NOTE ON EQUIVALENT LAGRANGIANS AND SYMMETRIESSARLET W.1983; JOURNAL OF PHYSICS A: MATHEMATICAL AND GENERAL; ISSN 0305-4470; GBR; DA. 1983; VOL. 16; NO 7; PP. L229-L233; BIBL. 15 REF.Article

FURTHER GENERALIZATION OF RAY-REID SYSTEMSSARLET W.1981; PHYS. LETT. SECT. A; ISSN 0375-9601; NLD; DA. 1981; VOL. 82; NO 4; PP. 161-164; BIBL. 17 REF.Article

EXACT INVARIANTS FOR TIME-DEPENDENT HAMILTONIAN SYSTEMS WITH ONE DEGREE-OF-FREEDOM.SARLET W.1978; J. PHYS. A; G.B.; DA. 1978; VOL. 11; NO 5; PP. 843-854; BIBL. 14 REF.Article

NOTE ON LINEAR SYSTEMS DERIVABLE FROM A VARIATIONAL PRINCIPLESARLET W.1983; PHYSICS LETTERS SECTION A; ISSN 0375-9601; NLD; DA. 1983; VOL. 95; NO 2; PP. 72-75; BIBL. 8 REF.Article

THE HELMHOLTZ CONDITIONS REVISITED. A NEW APPROACH TO THE INVERSE PROBLEM OF LAGRANGIAN DYNAMICSSARLET W.1982; J. PHYS. A; ISSN 0305-4470; GBR; DA. 1982; VOL. 15; NO 5; PP. 1503-1517; BIBL. 32 REF.Article

INVARIANCE AND CONSERVATION LAWS FOR LAGRANGIAN SYSTEMS WITH ONE DEGREE OF FREEDOM.SARLET W.1978; J. MATH. PHYS.; U.S.A.; DA. 1978; VOL. 19; NO 5; PP. 1049-1054; BIBL. 13 REF.Article

SYMMETRIES, FIRST INTEGRALS AND THE INVERSE PROBLEM OF LAGRANGIAN MECHANICSSARLET W.1981; J. PHYS. A; ISSN 0305-4470; GBR; DA. 1981; VOL. 14; NO 9; PP. 2227-2238; BIBL. 23 REF.Article

ON A COMMON DERIVATION OF THE AVERAGING METHOD AND THE TWO-TIMESCALE METHODSARLET W.1978; CELEST. MECH.; NLD; DA. 1978; VOL. 17; NO 3; PP. 299-311; BIBL. 21 REF.Article

EXACT INVARIANT FOR A TWO-DIMENSIONAL HARMONIC OSCILLATOR WITH TIME-DEPENDENT FREQUENCYSARLET W.1977; ABH. AKAD. WISSENSCH. D.D.R., MATH. NATURWISSENSCH. TECH.; DDR; DA. 1977; NO 4; PP. 201-208; BIBL. 7 REF.Conference Paper

CLASS OF HAMILTONIANS WITH ONE DEGREE-OF-FREEDOM ALLOWING APPLICATION OF KRUSKAL'S ASYMPTOTIC THEORY IN CLOSED FORM. II.SARLET W.1975; ANN. PHYS.; U.S.A.; DA. 1975; VOL. 92; NO 2; PP. 248-261; BIBL. 5 REF.Article

GENERALIZATIONS OF NOETHER'S THEOREM IN CLASSICAL MECHANICSSARLET W; CANTRIJN F.1981; SIAM REV.; ISSN 0036-1445; USA; DA. 1981; VOL. 23; NO 4; PP. 467-494; BIBL. 2 P.Article

A DIRECT CONSTRUCTION OF FIRST INTEGRALS FOR CERTAIN NON-LINEAR DYNAMICAL SYSTEMSSARLET W; BAHAR LY.1980; INTERNATION. J. NON-LINEAR MECH.; GBR; DA. 1980; VOL. 15; NO 2; PP. 133-146; ABS. FRE/GER; BIBL. 35 REF.Article

New aspects of integrability of generatized Hénon-Heiles systemsSARLET, W.Journal of physics. A, mathematical and general. 1991, Vol 24, Num 22, pp 5245-5251, issn 0305-4470Article

A GENERALIZATION OF THE NONLINEAR SUPERPOSITION IDEA FOR ERMAKOV SYSTEMSSARLET W; CANTRIJN F.1982; PHYSICS LETTERS SECTION A; ISSN 0375-9601; NLD; DA. 1982; VOL. 88; NO 8; PP. 383-387; BIBL. 6 REF.Article

CLASSIFICATION SCHEME FOR TWO-DIMENSIONAL ERMAKOV-TYPE SYSTEMS AND GENERALIZATIONSSARLET W; RAY JR.1981; J. MATH. PHYS. (N. Y.); ISSN 0022-2488; USA; DA. 1981; VOL. 22; NO 11; PP. 2504-2511; BIBL. 26 REF.Article

HIGHER-ORDER NOETHER SYMMETRIES AND CONSTANTS OF THE MOTIONSARLET W; CANTRIJN F.1981; J. PHYS. A; ISSN 0305-4470; GBR; DA. 1981; VOL. 14; NO 2; PP. 479-492; BIBL. 20 REF.Article

GENERAL SOLUTION AND INVARIANTS FOR A CLASS OF LAGRANGIAN EQUATIONS GOVERNED BY A VELOCITY-DEPENDENT POTENTIAL ENERGYENGELS E; SARLET W.1973; J. PHYS. A; G.B.; DA. 1973; VOL. 6; NO 6; PP. 818-825; BIBL. 13 REF.Serial Issue

Symmetries and alternative Lagrangians in higher-order mechanicsSARLET, W.Physics letters. A. 1985, Vol 108, Num 1, pp 14-18, issn 0375-9601Article

First integrals for one-dimensional particle motion in a non-linear, time-dependent potential fieldSARLET, W.International journal of non-linear mechanics. 1983, Vol 18, Num 4, pp 259-268, issn 0020-7462Article

REDUCE-procedures for the study of adjoint symmetries of second-order differential equationsSARLET, W; VANDEN BONNE, J.Journal of symbolic computation. 1992, Vol 13, Num 6, pp 683-693, issn 0747-7171Article

Geometric characterization of driven cofactor systemsSARLET, W; VANBIERVLIET, W.Journal of physics. A, Mathematical and theoretical (Print). 2008, Vol 41, Num 4, issn 1751-8113, 042001.1-041001.10Article

The inverse problem of the calculus of variations: The use of geometrical calculus in Douglas's analysisSARLET, W; THOMPSON, G; PRINCE, G. E et al.Transactions of the American Mathematical Society. 2002, Vol 354, Num 7, pp 2897-2919, issn 0002-9947Article

Linear connections for systems of second-order ordinary differential equationsCRAMPIN, M; MARTINEZ, E; SARLET, W et al.Annales de l'I.H.P. Physique théorique. 1996, Vol 65, Num 2, pp 223-249, issn 0246-0211Article

Higher-order differential equations and higher-order lagrangian mechanicsCRAMPIN, M; SARLET, W; CANTRIJN, F et al.Mathematical proceedings of the Cambridge Philosophical Society. 1986, Vol 99, Num 3, pp 565-587, issn 0305-0041Article

A class of recursion operators on a tangent bundleVERMEIRE, F; SARLET, W; CRAMPIN, M et al.Journal of physics. A, mathematical and general. 2006, Vol 39, Num 23, pp 7319-7340, issn 0305-4470, 22 p.Article