XBRL Files
To download, simply click the link to display the source page, and then right-click and Save As.
Note: These files are meant to be read with appropriate reader applications.
| Description | Document |
|---|---|
| XBRL INSTANCE DOCUMENT | zgsi-20190331.xml |
| XBRL TAXONOMY EXTENSION SCHEMA | zgsi-20190331.xsd |
| XBRL TAXONOMY EXTENSION CALCULATION LINKBASE | zgsi-20190331_cal.xml |
| XBRL TAXONOMY EXTENSION DEFINITION LINKBASE | zgsi-20190331_def.xml |
| XBRL TAXONOMY EXTENSION LABEL LINKBASE | zgsi-20190331_lab.xml |
| XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE | zgsi-20190331_pre.xml |