Painlevé analysis and similarity reductions for the magma equation. Harris, Shirley E., Clarkson, Peter A. (2006) SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Paramétrix pour un problème de Cauchy hyperbolique à multiplicité variable S. Alinhac (1975/1976) Séminaire Équations aux dérivées partielles (Polytechnique)
Periodic and solitary travelling-wave solutions of an extended reduced Ostrovsky equation. Parkes, E.John (2008) SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Periodic wave solutions for the generalized shallow water wave equation by the improved Jacobi elliptic function method. Inc, Mustafa, Ergüt, Mahmut (2005) Applied Mathematics E-Notes [electronic only]
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Pseudoholomorphic strips in symplectisations I : asymptotic behavior Casim Abbas (2004) Annales de l'I.H.P. Analyse non linéaire