Mrthfx

I'm trying to have all my references printed on the PDF, the thing is that I only cite 1 of all the entries in the .bib file. And looking at the documentation on biblatex it says I have to use the following command:

defbibentryset{hkeyi}{hkey1,key2,key3, …i}

But I do not understand the principal <key>, because from what I get all the rest hkey1, and so on, are the entries of the .bib file. Right?

I'm so used to using the nocite{*} command in the traditional bibliography style and now I'm trying to move to biblatex. Is there any other possibility? Like it seems quite troublesome to dead with this package, do you think is worthy?

My preamble looks like this:

documentclass{article}

usepackage{comment}





usepackage[]{biblatex}

addbibresource{Ex.bib}



begin{document}

 Some text 





printbibliography 

defbibentryset{*}{*}



 end{document}

And the .bib file is the following

@book{Brezis,

title={Functional analysis, Sobolev spaces and partial differential 

equations},

author={Brezis, Haim},

year={2010},

publisher={Springer Science & Business Media}

}





@inbook{sob1,

publisher = {Wiley-Blackwell},

author={Wiley-Blackwell},

isbn = {9781118032725},

title = {Sobolev Spaces of Functions of One Variable},

booktitle = {Applied Functional Analysis},

chapter = {7},

pages = {145-166},

doi = {10.1002/9781118032725.ch7},

url = 

{https://onlinelibrary.wiley.com/doi/abs/10.1002/9781118032725.ch7},

 eprint = 

{https://onlinelibrary.wiley.com/doi/pdf/10.1002/9781118032725.ch7},

year = {2011},

keywords = {Sobolev spaces, functions, distributions, trace theorems, 

Hilbert space}

}



@book{Kub,

title={Essentials of measure theory},

author={Kubrusly, Carlos S},

year={2015},

publisher={Springer}

}



@book{grabinsky,

title={Teor{'i}a de la medida/por Guillermo Grabinsky.},

author={Grabinsky, Guillermo},

publisher={La prensas ciencias, UNAM}, 

year={2011}

}

biblatex knows nocite and it works pretty much like its BibTeX counterpart. (The only difference that I'm aware of is that biblatex's nocite may also be used in the preamble. BibTeX normally wants it in the document body.)

You shouldn't be needing defbibentryset if you don't want to define entry sets. In any case defbibentryset{*}{*} should not do anything useful.

The real problem as confirmed in the comments here is the {'i} in grabinsky's Teor{'i}a. See for example Input encoding error after upgrading from Biber 1.9 to Biber 2.1, Unicode -(U+301) error in biblatex, but not in main text: {'{i}}. I suggest you use proper Unicode input and write

@book{grabinsky,

  title     = {Teoría de la medida},

  author    = {Grabinsky, Guillermo},

  publisher = {La prensas ciencias, UNAM}, 

  year      = {2011},

}

In general Biber accepts all valid Unicode input. Whether you can get a reasonable output from that depends on your TeX engine. pdfLaTeX only supports a limited subset of Unicode and may throw errors in certain cases. The Unicode engines XeLaTeX and LuaLaTeX shouldn't have those problems, but their willingness to print characters as expected depends on the support for those characters by the used fonts.

Biber also understands many of the ASCII-macro replacements for Unicode characters (e.g. "a or o), but for reasons explained in the linked post 'i or rather all constructions with i are problematic. At the moment the i exceptions are the only problematic constructions I am aware of, but there might well be a few more.

Since you mention Springer-generated .bib entries I suggest you have a look at Software-generated bibliographic entries: common errors and other mistakes to check before use. Often those entries give subpar results.

Note also that author={Wiley-Blackwell}, in sob1 looks odd. There is also little point in giving a full URL in the eprint field. Especially if it is the same URL as the one from the url field. I suggest you drop the eprint field in sob1.

The author in Kub should probably be author={Kubrusly, Carlos S.}, with a . after the S.