La répartition des ressources raresEKELAND I.Recherche (La). 1976, Vol 7, Num 65, pp 245-252Article

DISCONTINUITES DE CHAMPS HAMILTONIENS ET EXISTENCE DE SOLUTIONS OPTIMALES EN CALCUL DES VARIATIONS.EKELAND I.1977; INST. HAUTES ET. SCI., PUBL. MATH.; FR.; DA. 1977; NO 47; PP. 5-32; BIBL. 14 REF.Article

SOLUTIONS PERIODIQUES DES EQUATIONS DE HAMILTONEKELAND I.1979; CENTRE NATION. RECH. SCI., INST. RECH. MATH. AVANCEE, R.C.P. 25; FRA; DA. 1979; VOL. 27; PP. 63-73; BIBL. 16 REF.Article

SOME GENERAL PROPERTIES OF NON-COOPERATIVE GAMES.EKELAND I.1975; LECTURE NOTES ECON. MATH. SYST.; GERM.; DA. 1975; VOL. 107; PP. 134-139; (CONTROL THEORY NUMER. METHODS COMPUT. SYST. MODELLING. INT. SYMP.; ROCQUENCOURT; 1974)Conference Paper

DUAL VARIATIONAL METHODS IN NON-CONVEX OPTIMIZATION AND DIFFERENTIAL EQUATIONSEKELAND I.1983; LECTURE NOTES IN MATHEMATICS; ISSN 0075-8434; DEU; DA. 1983; VOL. 979; PP. 108-120; BIBL. 23 REF.Conference Paper

NONCONVEX MINIMIZATION PROBLEMSEKELAND I.1979; BULL. AMER. MATH. SOC.; USA; DA. 1979; VOL. 1; NO 3; PP. 443-474; BIBL. 39 REF.Article

ON THE VARIATIONAL PRINCIPLE. = SUR LE PRINCIPE VARIATIONNELEKELAND I.1974; J. MATH. ANAL. APPL.; U.S.A.; DA. 1974; VOL. 47; NO 2; PP. 324-353; BIBL. 1 P.Article

EXISTENCE DE SOLUTIONS OPTIMALES POUR DES PROBLEMES DE CONTROLE DE SYSTEMES GOUVERNES PAR DES EQUATIONS DIFFERENTIELLES ORDINAIRESEKELAND I.1971; I.R.I.A., CAH.; FR.; DA. 1971; NO 4; PP. 39-78; BIBL. 15 REF.Serial Issue

PERIODIC SOLUTIONS OF HAMILTONIAN EQUATIONS AND A THEOREM OF P. RABINOWITZEKELAND I.1979; J. DIFFER. EQUATIONS; USA; DA. 1979; VOL. 34; NO 3; PP. 523-534; BIBL. 7 REF.Article

SUITES MINIMISANTES ET SOLUTIONS OPTIMALES DE CERTAINS PROBLEMES DE CONTROLEEKELAND I.1971; I.R.I.A., CAH.; FR.; DA. 1971; NO 4; PP. 5-38; BIBL. 20 REF.Serial Issue

NOMBRE DE SOLUTIONS PERIODIQUES DES EQUATIONS DE HAMILTONEKELAND I; LASRY JM.1979; C.R. ACAD. SCI., A; FRA; DA. 1979; VOL. 288; NO 3; PP. 209-211; ABS. ENG; BIBL. 14 REF.Article

SOLUTIONS PERIODIQUES DE PERIODE DONNEE DES EQUATIONS HAMILTONIENNESCLARKE FH; EKELAND I.1978; C.R. ACAD. SCI., A SCI. MATH.; FRA; DA. 1978; VOL. 287; NO 15; PP. 1013-1015; ABS. ENG; BIBL. 2 REF.Article

A perturbation theory near convex Hamiltonian systemsEKELAND, I.Journal of differential equations (Print). 1983, Vol 50, Num 3, pp 407-440, issn 0022-0396Article

OSCILLATIONS ENTRETENUES DE SYSTEMES HAMILTONIENS NON LINEAIRESCLARKE F; EKELAND I.1979; C.R. ACAD. SCI., A; FRA; DA. 1979; VOL. 289; NO 6; PP. 393-395; ABS. ENG; BIBL. 3 REF.Article

Hypersurfaces pincées et systèmes hamiltoniens = Pinched hypersurfaces and hamiltonian systemsEKELAND, I.Comptes rendus des séances de l'Académie des sciences. Série 1, Mathématique. 1984, Vol 299, Num 14, pp 669-672, issn 0249-6291Article

ON THE NUMBER OF PERIODIC TRAJECTORIES FOR A HAMILTONIAN FLOW ON A CONVEX ENERGY SURFACEEKELAND I; LASRY JM.1980; ANN. MATH.; ISSN 0003-486X; USA; DA. 1980; VOL. 112; NO 2; PP. 283-319; BIBL. 26 REF.Article

SECOND-ORDER EVOLUTION EQUATIONS ASSOCIATED WITH CONVEX HAMILTONIANSAUBIN JP; EKELAND I.1980; BULL. CANAD. MATH.; CAN; DA. 1980; VOL. 23; NO 1; PP. 81-94; BIBL. 7 REF.Article

GENERIC FRECHET-DIFFERENTIABILITY AND PERTURBED OPTIMIZATION PROBLEMS IN BANACH SPACES.EKELAND I; LEBOURG G.1976; TRANS. AMER. MATH. SOC.; U.S.A.; DA. 1976; VOL. 224; NO 2; PP. 193-216; BIBL. 14 REF.Article

Convex Hamiltonian energy surfaces and their periodic trajectoriesEKELAND, I; HOFER, H.Communications in mathematical physics. 1987, Vol 113, Num 3, pp 419-469, issn 0010-3616Article

Un flot hamiltonien a au moins deux trajectoires fermées sur toute surface d'énergie convexe et bornée = A Hamiltonian flow has at least two closed trajectories on each convex and bounded energy hypersurfaceEKELAND, I; LASSOUED, L.Comptes rendus de l'Académie des sciences. Série 1, Mathématique. 1985, Vol 301, Num 5, pp 161-164, issn 0764-4442Article

Z₂-equivariant Ljusternik-Schnirelman theory for non-even functionalsEKELAND, I; GHOUSSOUB, N.Annales de l'Institut Henri Poincaré. Analyse non linéaire. 1998, Vol 15, Num 3, pp 341-370, issn 0294-1449Article

Periodic solutions of a class of Hamiltonian systems with singularitiesAMBROSETTI, A; EKELAND, I.Proceedings of the Royal Society of Edinburgh. Section A. Mathematics. 1990, Vol 114, Num 1-2, pp 1-13, issn 0308-2105Article

Aggregation and market demand : An exterior differential calculus viewpointCHIAPPORI, P. A; EKELAND, I.Econometrica. 1999, Vol 67, Num 6, pp 1435-1457, issn 0012-9682Article

Subharmonics for convex nonautonomous Hamiltonian systemsEKELAND, I; HOFER, H.Communications on pure and applied mathematics. 1987, Vol 40, Num 1, pp 1-36, issn 0010-3640Article

La théorie de l'index pour certains systèmes hamiltoniens non définis positifs = The index theory for a class of hamiltonian systems non positive definiteD'ONOFRIO, B; EKELAND, I.Comptes rendus de l'Académie des sciences. Série 1, Mathématique. 1987, Vol 305, Num 6, pp 249-251, issn 0764-4442Article