Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001140361-19-008927-index-headers.html | 2019-05-10 14:25:09 | |
| 0001140361-19-008927-index.html | 2019-05-10 14:25:09 | |
| 0001140361-19-008927.txt | 2019-05-10 14:25:09 | |
 0001140361-19-008927-xbrl.zip | 103293 | 2019-05-10 14:25:09 |
| bstc-20190331.xml | 571055 | 2019-05-10 14:25:09 |
| bstc-20190331.xsd | 26713 | 2019-05-10 14:25:09 |
| bstc-20190331_cal.xml | 32601 | 2019-05-10 14:25:09 |
| bstc-20190331_def.xml | 151236 | 2019-05-10 14:25:09 |
| bstc-20190331_lab.xml | 419269 | 2019-05-10 14:25:09 |
| bstc-20190331_pre.xml | 248160 | 2019-05-10 14:25:09 |
| ex31_1.htm | 14294 | 2019-05-10 14:25:09 |
| ex31_2.htm | 14409 | 2019-05-10 14:25:09 |
| ex32_1.htm | 7665 | 2019-05-10 14:25:09 |
| FilingSummary.xml | 18528 | 2019-05-10 14:25:09 |
| Financial_Report.xlsx | 41630 | 2019-05-10 14:25:09 |
| form10q.htm | 537043 | 2019-05-10 14:25:09 |
| R1.htm | 25727 | 2019-05-10 14:25:09 |
| R10.htm | 16155 | 2019-05-10 14:25:09 |
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| R8.htm | 114315 | 2019-05-10 14:25:09 |
| R9.htm | 5521 | 2019-05-10 14:25:09 |
| report.css | 2767 | 2019-05-10 14:25:09 |
| Show.js | 1085 | 2019-05-10 14:25:09 |