Discrete spectra for critical Dirac-Coulomb Hamiltonians.; 2017. Available from: http://preprints.sissa.it/handle/1963/35300
. Krein-Visik-Birman self-adjoint extension theory revisited.; 2017. Available from: http://preprints.sissa.it/handle/1963/35286
. Self-Adjoint Extensions of Dirac Operator with Coulomb Potential. SISSA; 2017. Available from: http://urania.sissa.it/xmlui/handle/1963/35273
. . On Geometric Quantum Confinement in Grushin-Like Manifolds.; 2018. Available from: http://preprints.sissa.it/handle/1963/35322
. Hydrogenoid Spectra with Central Perturbations.; 2018. Available from: http://preprints.sissa.it/handle/1963/35321
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