| article html file updated | 8 February 2020 23:30 CET | Update | https://www.mdpi.com/2079-9721/5/4/29 |
| article html file updated | 29 September 2019 01:52 CEST | Update | N/A |
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| article html file updated | 18 April 2019 07:31 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:45 CET | Update | N/A |
| article html file updated | 8 December 2017 10:16 CET | Original file | N/A |
| article xml uploaded. | 8 December 2017 10:14 CET | Original file | https://www.mdpi.com/2079-9721/5/4/29/xml |
| article pdf uploaded. | 8 December 2017 10:14 CET | Version of Record | https://www.mdpi.com/2079-9721/5/4/29/pdf |
