| article html file updated | 11 February 2020 16:19 CET | Update | https://www.mdpi.com/2076-3921/8/2/42 |
| article html file updated | 15 October 2019 01:37 CEST | Update | - |
| article html file updated | 26 April 2019 16:11 CEST | Update | - |
| article html file updated | 12 April 2019 11:58 CEST | Update | - |
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| article html file updated | 1 March 2019 21:34 CET | Update | - |
| article html file updated | 1 March 2019 01:49 CET | Update | - |
| article html file updated | 15 February 2019 12:36 CET | Original file | - |
| article pdf uploaded. | 15 February 2019 12:34 CET | Version of Record | https://www.mdpi.com/2076-3921/8/2/42/pdf |
| article xml uploaded. | 15 February 2019 12:34 CET | Update | https://www.mdpi.com/2076-3921/8/2/42/xml |
| article xml file uploaded | 15 February 2019 12:34 CET | Original file | - |
