| article html file updated | 8 February 2020 17:09 CET | Update | https://www.mdpi.com/2297-8739/4/4/29 |
| article html file updated | 27 September 2019 09:03 CEST | Update | N/A |
| article html file updated | 3 May 2019 00:05 CEST | Update | N/A |
| article html file updated | 2 January 2018 14:09 CET | Update | N/A |
| article html file updated | 25 September 2017 15:56 CEST | Original file | N/A |
| article xml uploaded. | 25 September 2017 15:54 CEST | Original file | https://www.mdpi.com/2297-8739/4/4/29/xml |
| article pdf uploaded. | 25 September 2017 15:54 CEST | Version of Record | https://www.mdpi.com/2297-8739/4/4/29/pdf |
