Perturbazioni periodiche di equazioni differenziali ordinarie su varietà differenziabili Marco Spadini — 1998 Bollettino dell'Unione Matematica Italiana
Harmonic solutions to perturbations of periodic separated variables ODEs on manifolds. Spadini, Marco — 2003 Electronic Journal of Differential Equations (EJDE) [electronic only]
Multiplicity of forced oscillations for scalar differential equations. Furi, Massimo; Pera, Maria Patrizia; Spadini, Marco — 2001 Electronic Journal of Differential Equations (EJDE) [electronic only]
On the uniqueness of the fixed point index on differentiable manifolds. Furi, Massimo; Pera, Maria Patrizia; Spadini, Marco — 2004 Fixed Point Theory and Applications [electronic only]
A set of axioms for the degree of a tangent vector field on differentiable manifolds. Furi, Massimo; Pera, Maria Patrizia; Spadini, Marco — 2010 Fixed Point Theory and Applications [electronic only]