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| 0001140361-18-022751-index.html | 2018-05-10 15:03:47 | |
| 0001140361-18-022751.txt | 2018-05-10 15:03:47 | |
 0001140361-18-022751-xbrl.zip | 123656 | 2018-05-10 15:03:47 |
| bstc-20180331.xml | 890636 | 2018-05-10 15:03:47 |
| bstc-20180331.xsd | 29727 | 2018-05-10 15:03:47 |
| bstc-20180331_cal.xml | 37638 | 2018-05-10 15:03:47 |
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| ex32.htm | 5778 | 2018-05-10 15:03:47 |
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| Financial_Report.xlsx | 54528 | 2018-05-10 15:03:47 |
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| R9.htm | 14845 | 2018-05-10 15:03:47 |
| report.css | 2767 | 2018-05-10 15:03:47 |
| Show.js | 1410 | 2018-05-10 15:03:47 |