1. Formal Power Series and Linear Systems of Meromorphic Ordinary Differential Equations;Balser,2000
2. Monomial summability and doubly singular differential equations;Canalis-Durand;J. Differential Equations,2007
3. Gevrey solutions of singularly perturbed differential equations;Canalis-Durand;J. Reine Angew. Math.,2000
4. Étude de Certains Systèmes de Pfaff Avec Singularités;Gérard,1979
5. Asymptotic Analysis for Integrable Connections with Irregular Singular Points;Majima,1984