this is text, which is ignored by bibtex.

@PREAMBLE{
    This is only used for BibTeX files used in LaTeX documents
}

@Comment{
    Comments are ignored too.
}

@ARTICLE{key1,
	author	= {Gerhard Gossen and Ludwig van Beethoven},
	title	= "Paper title",
	year	= 2008,
	month	= aug,
}

@STRING{ gerhard = "Gerhard" }

@STRING{ gossen = "Gossen" }

@BOOK{ key2,
	author 	= gerhard # " " # gossen,
	title	= "Book title",
	year	= "2008",
	month	= aug,
}