# requires 'use utf8' and a utf8-enabled editor
sub latexise_umlauts {
	my $string = shift;

	$string =~ s/\\/{\\backslash}/g;
	$string =~ s/\$/{\\\$}/g;
	$string =~ s/&/{\\&}/g;
	$string =~ s/%/{\\%}/g;
	$string =~ s/#/{\\#}/g;
	$string =~ s/_/{\\_}/g;
	$string =~ s/>/{\\textgreater}/g;
	$string =~ s/</{\\textless}/g;

	$string =~ s/ä/\\"a/g;
	$string =~ s/ö/\\"o/g;
	$string =~ s/ü/\\"u/g;
	$string =~ s/Ä/\\"A/g;
	$string =~ s/Ö/\\"O/g;
	$string =~ s/Ü/\\"U/g;
	$string =~ s/ß/\\ss{}/g;

	$string =~ s/²/\\textsuperscript{2}/g;
	$string =~ s/³/\\textsuperscript{3}/g;

	return $string;
}