Publications

Parmeggiani, A., Subunit balls for symbols of pseudodifferential operators, «ADVANCES IN MATHEMATICS», 1997, 131, pp. 357 - 452 [Scientific article]

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 [Scientific article]

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 [Scientific article]

Contucci, P.; Knauf, A., The phase transition of the number-theoretical spin chain, «FORUM MATHEMATICUM», 1997, 9, pp. 547 - 567 [Scientific article]