BIFURCATION AND SYMMETRIESCICOGNA G.1982; BOLL. UNIONE MAT. ITAL., B; ISSN 504971; ITA; DA. 1982; VOL. 1; NO 2; PP. 787-796; ABS. ITA; BIBL. 4 REF.Article

SYMMETRY BREAKDOWN FROM BIFURCATIONCICOGNA G.1981; LETT. NUOVO CIMENTO; ISSN 0024-1318; ITA; DA. 1981; VOL. 31; NO 17; PP. 600-602; BIBL. 11 REF.Article

On the convergence of normalizing transformations in the presence of symmetriesCICOGNA, G.Journal of mathematical analysis and applications. 1996, Vol 199, Num 1, pp 243-255, issn 0022-247XArticle

A nonlinear version of the equivalent bifurcation lemmaCICOGNA, G.Journal of physics. A, mathematical and general. 1990, Vol 23, Num 24, pp L1339-L1343, issn 0305-4470Article

Searching for periodic solutions of nonlinear systemsCICOGNA, G.Lettere al Nuovo Cimento della Societa Italiana di Fisica. 1984, Vol 40, Num 15, pp 449-452, issn 0375-930XArticle

Effects of symmetry-breaking perturbations on the onset of the smale-horseshoe chaosCICOGNA, G.Acta mechanica. 1989, Vol 76, Num 3-4, pp 189-202, issn 0001-5970, 14 p.Article

On the quaternionic bifurcationCICOGNA, G.Journal of physics. A, mathematical and general. 1985, Vol 18, Num 14, pp L829-L832, issn 0305-4470Article

Periodic solutions of some nonlinear evolution equationsCICOGNA, G.Lettere al Nuovo Cimento della Societa Italiana di Fisica. 1983, Vol 37, Num 15, pp 529-532, issn 0375-930XArticle

Resonant bifurcationsCICOGNA, G.Journal of mathematical analysis and applications. 2000, Vol 241, Num 2, pp 157-180, issn 0022-247XArticle

Simple criteria for stable bifurcating periodic solutions of O.D.E.'sCICOGNA, G.SIAM journal on mathematical analysis. 1987, Vol 18, Num 1, pp 34-45, issn 0036-1410Article

SPONTANEOUS BREAKINGS OF CHIRAL SYMMETRIES. II. MASS RELATIONS AND PARTICLE MIXINGSCICOGNA G; STROCCHI F; VERGARA CAFFARELLI R et al.1972; PHYS. REV., D; U.S.A.; DA. 1972; VOL. 6; NO 1; PP. 301-318; BIBL. 27 REF.Serial Issue

Poincaré normal forms and Lie point symmetriesCICOGNA, G; GAETA, G.Journal of physics. A, mathematical and general. 1994, Vol 27, Num 2, pp 461-476, issn 0305-4470Article

Symmetry invariance and centre manifolds for dynamical systemsCICOGNA, G; GAETA, G.Il Nuovo cimento. B. 1994, Vol 109, Num 1, pp 59-76, issn 0369-3554Article

Periodic solutions from symmetryCICOGNA, G; GAETA, G.Nonlinear analysis. 1989, Vol 13, Num 5, pp 475-488, issn 0362-546XArticle

Periodic and wave-like solutions in non-linear latticesCICOGNA, G; GAETA, G.Journal of physics. A, mathematical and general. 1989, Vol 22, Num 17, pp L809-L815, issn 0305-4470Article

Spontaneous linearization and periodic solutions in Hopf and symmetric bifurcationsCICOGNA, G; GAETA, G.Physics letters. A. 1986, Vol 116, Num 7, pp 303-306, issn 0375-9601Article

Modifying the onset of homoclinic chaos : application to a bistable potentialCICOGNA, G; FRONZONI, L.Physical review. A. 1993, Vol 47, Num 6E, pp 4585-4588, issn 1050-2947Article

A Hopf bifurcation breaking rotation symmetryCICOGNA, G; GAETA, G.Journal of physics. A, mathematical and general. 1988, Vol 21, Num 18, pp L875-L878, issn 0305-4470Article

Quaternionic-like bifurcation in the absence of symmetryCICOGNA, G; GAETA, G.Journal of physics. A, mathematical and general. 1987, Vol 20, Num 1, pp 79-89, issn 0305-4470Article

Periodic solutions from quaternionic bifurcationCICOGNA, G; GAETA, G.Lettere al Nuovo Cimento della Societa Italiana di Fisica. 1985, Vol 44, Num 2, pp 65-68, issn 0375-930XArticle

Nonlinear Lie symmetries in bifurcation theoryCICOGNA, G; GAETA, G.Physics letters. A. 1993, Vol 172, Num 5, pp 361-364, issn 0375-9601Article

Classification of the extended symmetries of Fokker-Planck equationsCICOGNA, G; VITALI, D.Journal of physics. A, mathematical and general. 1990, Vol 23, Num 3, pp L85-L88, issn 0305-4470Article

Symmetry properties of a system of Euler-type equations for magnetized plasmasCECCHERINI, F; CICOGNA, G; PEGORARO, F et al.Journal of physics. A, mathematical and general. 2005, Vol 38, Num 21, pp 4597-4610, issn 0305-4470, 14 p.Article

A generalization of λ-symmetry reduction for systems of ODEs: σ-symmetriesCICOGNA, G; GAETA, G; WALCHER, S et al.Journal of physics. A, Mathematical and theoretical (Print). 2012, Vol 45, Num 35, issn 1751-8113, 355205.1-355205.29Article

Remarks on bifurcation with symmetry, gradient property, and reducible representationsCICOGNA, G; GAETA, G; ROSSI, P et al.Journal of mathematical physics. 1986, Vol 27, Num 2, pp 447-450, issn 0022-2488Article