| article html file updated | 9 February 2020 00:53 CET | Update | https://www.mdpi.com/2076-3417/8/1/9 |
| article html file updated | 29 September 2019 09:56 CEST | Update | - |
| article html file updated | 2 May 2019 06:49 CEST | Update | - |
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| article html file updated | 1 February 2018 09:40 CET | Update | - |
| article html file updated | 22 December 2017 11:19 CET | Original file | - |
| article xml uploaded. | 22 December 2017 11:18 CET | Update | https://www.mdpi.com/2076-3417/8/1/9/xml |
| article xml uploaded. | 22 December 2017 11:18 CET | Original file | - |
| article pdf uploaded. | 22 December 2017 11:18 CET | Version of Record | https://www.mdpi.com/2076-3417/8/1/9/pdf |
