Part of the reference appears like?












0















Like anyone, I got my references using google scholar with BibTeX.



But the problem that I face is some of them appears ?? inside it.



An example of that: this book 'The nature of statistical learning theory'



in my latex file, it appears like this: Vapnik, V.: The Nature of Statistical Learning Theory. Springer, ??? (2013)



I used the same as google scholar provided with BibTeX, and this happened just to this but the remaining it's fine.



Any help with that, please?










share|improve this question



























    0















    Like anyone, I got my references using google scholar with BibTeX.



    But the problem that I face is some of them appears ?? inside it.



    An example of that: this book 'The nature of statistical learning theory'



    in my latex file, it appears like this: Vapnik, V.: The Nature of Statistical Learning Theory. Springer, ??? (2013)



    I used the same as google scholar provided with BibTeX, and this happened just to this but the remaining it's fine.



    Any help with that, please?










    share|improve this question

























      0












      0








      0








      Like anyone, I got my references using google scholar with BibTeX.



      But the problem that I face is some of them appears ?? inside it.



      An example of that: this book 'The nature of statistical learning theory'



      in my latex file, it appears like this: Vapnik, V.: The Nature of Statistical Learning Theory. Springer, ??? (2013)



      I used the same as google scholar provided with BibTeX, and this happened just to this but the remaining it's fine.



      Any help with that, please?










      share|improve this question














      Like anyone, I got my references using google scholar with BibTeX.



      But the problem that I face is some of them appears ?? inside it.



      An example of that: this book 'The nature of statistical learning theory'



      in my latex file, it appears like this: Vapnik, V.: The Nature of Statistical Learning Theory. Springer, ??? (2013)



      I used the same as google scholar provided with BibTeX, and this happened just to this but the remaining it's fine.



      Any help with that, please?







      bibliographies bibtex hyperref






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 12 mins ago









      Sara WaslSara Wasl

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