| article html file updated | 9 February 2020 05:52 CET | Update | https://www.mdpi.com/2076-3425/8/2/31 |
| article html file updated | 30 September 2019 14:48 CEST | Update | - |
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| article html file updated | 14 March 2018 08:31 CET | Update | - |
| article html file updated | 7 February 2018 15:18 CET | Original file | - |
| article xml uploaded. | 7 February 2018 15:17 CET | Original file | https://www.mdpi.com/2076-3425/8/2/31/xml |
| article pdf uploaded. | 7 February 2018 15:17 CET | Version of Record | https://www.mdpi.com/2076-3425/8/2/31/pdf |
