| article html file updated | 9 February 2020 03:13 CET | Update | https://www.mdpi.com/2076-3425/8/1/15 |
| article html file updated | 29 September 2019 22:59 CEST | Update | - |
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| article html file updated | 1 February 2018 13:58 CET | Update | - |
| article html file updated | 16 January 2018 09:55 CET | Original file | - |
| article xml uploaded. | 16 January 2018 09:54 CET | Original file | https://www.mdpi.com/2076-3425/8/1/15/xml |
| article pdf uploaded. | 16 January 2018 09:54 CET | Version of Record | https://www.mdpi.com/2076-3425/8/1/15/pdf |
