| article html file updated | 9 February 2020 23:32 CET | Update | https://www.mdpi.com/2032-6653/9/2/21 |
| article html file updated | 5 October 2019 03:04 CEST | Update | - |
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| article html file updated | 1 August 2018 09:50 CEST | Update | - |
| article html file updated | 30 June 2018 12:47 CEST | Original file | - |
| article pdf uploaded. | 30 June 2018 12:46 CEST | Version of Record | https://www.mdpi.com/2032-6653/9/2/21/pdf |
| article xml uploaded. | 30 June 2018 12:46 CEST | Update | https://www.mdpi.com/2032-6653/9/2/21/xml |
| article xml file uploaded | 30 June 2018 12:46 CEST | Original file | - |
