| article html file updated | 9 February 2020 19:42 CET | Update | https://www.mdpi.com/2199-8531/4/2/18 |
| article html file updated | 4 October 2019 03:10 CEST | Update | N/A |
| article html file updated | 30 April 2019 15:07 CEST | Update | N/A |
| article html file updated | 16 April 2019 15:40 CEST | Update | N/A |
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| article html file updated | 6 June 2018 10:35 CEST | Update | N/A |
| article xml uploaded. | 6 June 2018 10:34 CEST | Update | https://www.mdpi.com/2199-8531/4/2/18/xml |
| article pdf uploaded. | 6 June 2018 10:30 CEST | Updated version of record | https://www.mdpi.com/2199-8531/4/2/18/pdf |
| article html file updated | 1 June 2018 23:58 CEST | Update | N/A |
| article html file updated | 31 May 2018 12:26 CEST | Original file | N/A |
