| article html file updated | 9 February 2020 18:30 CET | Update | https://www.mdpi.com/2226-4787/6/2/44 |
| article html file updated | 3 October 2019 19:59 CEST | Update | - |
| article html file updated | 30 April 2019 17:52 CEST | Update | - |
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| article html file updated | 30 March 2019 03:12 CET | Update | - |
| article html file updated | 27 June 2018 09:28 CEST | Update | - |
| article html file updated | 22 May 2018 06:05 CEST | Original file | - |
| article pdf uploaded. | 22 May 2018 06:04 CEST | Version of Record | https://www.mdpi.com/2226-4787/6/2/44/pdf |
| article xml uploaded. | 22 May 2018 06:04 CEST | Update | https://www.mdpi.com/2226-4787/6/2/44/xml |
| article xml file uploaded | 22 May 2018 06:04 CEST | Original file | - |
