no. 1

Singularity problems in linear elastodynamics
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 18 (1991) no. 1, pp. 103-133. 
@article{ASNSP_1991_4_18_1_103_0,
     author = {Carbonaro, Bruno and Russo, Remigio},
     title = {Singularity problems in linear elastodynamics},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {103--133},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 18},
     number = {1},
     year = {1991},
     zbl = {0734.73008},
     mrnumber = {1118223},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1991_4_18_1_103_0/}
}
Carbonaro, Bruno; Russo, Remigio. Singularity problems in linear elastodynamics. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 18 (1991) no. 1, pp. 103-133. http://www.numdam.org/item/ASNSP_1991_4_18_1_103_0/

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