Delort, Jean-Marc Normal forms and long time existence for semilinear Klein–Gordon equations. (English) Zbl 1178.35310 Boll. Unione Mat. Ital., Sez. B, Artic. Ric. Mat. (8) 10, No. 1, 1-23 (2007). MSC: 35Q40 81Q05 × Cite Format Result Cite Review PDF
Ambrosio, Luigi The flow associated to weakly differentiable vector fields: recent results and open problems. (English) Zbl 1178.34069 Boll. Unione Mat. Ital., Sez. B, Artic. Ric. Mat. (8) 10, No. 1, 25-41 (2007). MSC: 34G20 35Dxx × Cite Format Result Cite Review PDF
Hamburger, Christoph Partial boundary regularity of solutions of nonlinear superelliptic systems. (English) Zbl 1178.35178 Boll. Unione Mat. Ital., Sez. B, Artic. Ric. Mat. (8) 10, No. 1, 63-81 (2007). MSC: 35J65 35B65 × Cite Format Result Cite Review PDF