function do_isbd()
{
global $msg;
$isbd_simple = $this->get_isbd_simple();
$isbd_oeuvre_expressions = "";
if (count($this->oeuvre_expressions)) {
$isbd_oeuvre_expressions .= " .- " . $msg["aut_oeuvre_form_oeuvre_expression"];
foreach ($this->oeuvre_expressions as $expression) {
$oeuvre_to = new titre_uniforme($expression['to_id']);
$isbd_oeuvre_expressions .= " " . $oeuvre_to->get_isbd_simple();
}
}
$isbd_other_links = "";
if (count($this->other_links)) {
for ($i = 0; $i < count($this->other_links); $i++) {
$memo_links[$this->other_links[$i]['type']][] = $i;
}
foreach ($memo_links as $link => $index_list) {
$isbd_other_links .= " - " . $this->other_links[$index_list[0]]['type_name'];
foreach ($index_list as $index) {
$oeuvre_link = new titre_uniforme($this->other_links[$index]['to_id']);
$isbd_other_links .= " " . $oeuvre_link->get_isbd_simple();
}
}
}
$this->tu_isbd = $isbd_simple . $isbd_oeuvre_expressions . $isbd_other_links;
return $isbd_simple;
}
