Lyx não compila quando se pede para mostrar todas as referências biobliográficas

Migrado de https://github.com/abntex/abntex2/issues/117:

```
What steps will reproduce the problem?
1. Criar nova bibliografia através do Lyx, utilizando o estilo abntex2-alf
2. Configurar esta para mostrar todas as referências (all references)

What is the expected output? What do you see instead?
Ao invés de compilar, temos diversos erros:

What version of the product are you using? On what operating system?
Ubuntu 14.04 / Lyx 2.0.6

Additional information:
Por favor, cheque o log em anexo

```

Original issue reported on code.google.com by `goo...@cooperativadigital.com.br` on 22 May 2014 at 1:27

Attachments:
- [tex.log](https://storage.googleapis.com/google-code-attachments/abntex2/issue-117/comment-0/tex.log)

The issue involves a compilation error in LyX when using the abntex2-alf bibliography style with 'all references'. Start by examining the attached tex.log for error messages. Look at the abntex2-alf style definition and how it handles the 'all references' option. Test the configuration in a minimal LyX document to reproduce the issue.

由索引模型根據 Issue 內容生成。