| article html file updated | 9 February 2020 00:45 CET | Update | https://www.mdpi.com/2076-3417/8/1/2 |
| article html file updated | 29 September 2019 09:09 CEST | Update | - |
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| article html file updated | 1 February 2018 09:33 CET | Update | - |
| article html file updated | 21 December 2017 12:10 CET | Original file | - |
| article xml uploaded. | 21 December 2017 12:09 CET | Original file | https://www.mdpi.com/2076-3417/8/1/2/xml |
| article pdf uploaded. | 21 December 2017 12:09 CET | Version of Record | https://www.mdpi.com/2076-3417/8/1/2/pdf |
