no. 2
Corrections to my paper “A Sturm-Liouville theorem for nonlinear elliptic partial differential equations”
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 3, Tome 22 (1968) no. 2, pp. 351-354. 
@article{ASNSP_1968_3_22_2_351_0,
     author = {Berger, Melvyn},
     title = {Corrections to my paper {{\textquotedblleft}A} {Sturm-Liouville} theorem for nonlinear elliptic partial differential equations{\textquotedblright}},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {351--354},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 22},
     number = {2},
     year = {1968},
     zbl = {0155.16902},
     mrnumber = {230161},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1968_3_22_2_351_0/}
}
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AU  - Berger, Melvyn
TI  - Corrections to my paper “A Sturm-Liouville theorem for nonlinear elliptic partial differential equations”
JO  - Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
PY  - 1968
DA  - 1968///
SP  - 351
EP  - 354
VL  - Ser. 3, 22
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PB  - Scuola normale superiore
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UR  - https://zbmath.org/?q=an%3A0155.16902
UR  - https://www.ams.org/mathscinet-getitem?mr=230161
LA  - en
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ER  - 
Berger, Melvyn S. Corrections to my paper “A Sturm-Liouville theorem for nonlinear elliptic partial differential equations”. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 3, Tome 22 (1968) no. 2, pp. 351-354. http://archive.numdam.org/item/ASNSP_1968_3_22_2_351_0/