Parmeggiani, A., Necessary and sufficient conditions for the almost-positivity of certain 4th-order pseudodifferential operators. A generalization, «FORUM MATHEMATICUM», 1998, 10, pp. 277 - 301 [articolo]
Parenti, C.; Parmeggiani, A., Some Remarks on Almost-Positivity of ψdo ' s, «BOLLETTINO DELL'UNIONE MATEMATICA ITALIANA. B», 1998, 1, pp. 187 - 215 [articolo]
Parmeggiani, Alberto, An application of the almost-positivity of a class of fourth-order pseudodifferential operators, «JOURNAL D'ANALYSE MATHEMATIQUE», 1997, 71, pp. 41 - 57 [articolo]
Parmeggiani, A., Subunit balls for symbols of pseudodifferential operators, «ADVANCES IN MATHEMATICS», 1997, 131, pp. 357 - 452 [articolo]
Parmeggiani, A.; Xu, C. -J., The Dirichlet problem for sub-elliptic second order equations, «ANNALI DI MATEMATICA PURA ED APPLICATA», 1997, 173, pp. 233 - 243 [articolo]
Parenti, C.; Parmeggiani, A., A necessary and sufficient condition for a lower bound for fourth-order pseudodifferential operators, «JOURNAL D'ANALYSE MATHEMATIQUE», 1996, 69, pp. 55 - 65 [articolo]
Parmeggiani, A., On the propagation of smoothness for semilinear systems of Maxwell-Klein-Gordon type, «ANNALI DI MATEMATICA PURA ED APPLICATA», 1993, 165, pp. 159 - 168 [articolo]
Graffi, S.; Parmeggiani, A., Quantum evolution and classical flow in complex phase space, «COMMUNICATIONS IN MATHEMATICAL PHYSICS», 1990, 128, pp. 393 - 409 [articolo]
Parmeggiani, A., On the parametrix for a class of Schrödinger operators with potentials of quadratic growth, «ANNALI DI MATEMATICA PURA ED APPLICATA», 1988, 152, pp. 237 - 258 [articolo]
