Scalari, Alberto; Zampieri, Giuseppe The “edge of the wedge” theorem in the microlocalization at the boundary. (Italian. English summary) Zbl 0828.32009 Rend. Accad. Naz. Sci. XL, V. Ser., Mem. Mat. 16, No. 1, 179-184 (1992). MSC: 32L20 58J15 × Cite Format Result Cite Review PDF
Vesentini, Edoardo Small eigenvalues of the Laplace-Beltrami operator. (English) Zbl 0832.58033 Rend. Accad. Naz. Sci. XL, V. Ser., Mem. Mat. 15, No. 1, 111-124 (1991). MSC: 58J50 58A15 × Cite Format Result Cite Review PDF