75   function GetLocalPdfPath($pmid, $doi) {  argument
84         $ml = $this->pdfDoiNS.$delimiter.str_replace("/","_",$doi).".pdf";
138           $doi = $this->_catchDoiFromRawMedlineContent($content);
140           if (!empty($doi))
141               $cross[$id] = $doi;
156     foreach ($pdfDois as $doi) {
157         $pmid = array_search($doi, $cross);
161             $removeDoi[] = $doi;
215   function GetDoiPdfUrl($doi) {  argument
218     $doi = str_replace("/","_",$doi);
219     $ml = $this->pdfDoiNS.$delimiter.$doi.".pdf";
224   function GetDoiPdfThumbnailUrl($doi){  argument
227     $doi = str_replace("/","_",$doi);
228     $ml = $this->pdfDoiNS.$delimiter.$doi.'.jpg';
268     $doi = $this->_catchDoiFromRawMedlineContent($raw);
274         $crossrefs[$id] = $doi;