| article html file updated | 8 February 2020 17:13 CET | Update | https://www.mdpi.com/2079-9276/6/4/49 |
| article html file updated | 27 September 2019 09:27 CEST | Update | N/A |
| article html file updated | 2 May 2019 23:57 CEST | Update | N/A |
| article html file updated | 2 January 2018 10:29 CET | Update | N/A |
| article html file updated | 30 September 2017 05:11 CEST | Update | N/A |
| article xml uploaded. | 30 September 2017 05:10 CEST | Update | https://www.mdpi.com/2079-9276/6/4/49/xml |
| article pdf uploaded. | 30 September 2017 05:10 CEST | Updated version of record | https://www.mdpi.com/2079-9276/6/4/49/pdf |
| article html file updated | 26 September 2017 17:46 CEST | Original file | N/A |
| article xml uploaded. | 26 September 2017 17:45 CEST | Original file | N/A |
| article pdf uploaded. | 26 September 2017 17:45 CEST | Version of Record | https://www.mdpi.com/2079-9276/6/4/49/pdf-vor |
