| article html file updated | 9 February 2020 01:18 CET | Update | https://www.mdpi.com/2076-3417/8/1/33 |
| article html file updated | 29 September 2019 12:16 CEST | Update | - |
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| article html file updated | 27 December 2017 07:25 CET | Original file | - |
| article xml uploaded. | 27 December 2017 07:24 CET | Original file | https://www.mdpi.com/2076-3417/8/1/33/xml |
| article pdf uploaded. | 27 December 2017 07:24 CET | Version of Record | https://www.mdpi.com/2076-3417/8/1/33/pdf |
