| article html file updated | 9 February 2020 04:11 CET | Update | https://www.mdpi.com/2297-8739/5/1/9 |
| article html file updated | 30 September 2019 04:30 CEST | Update | N/A |
| article html file updated | 1 May 2019 23:53 CEST | Update | N/A |
| article html file updated | 17 April 2019 22:25 CEST | Update | N/A |
| article html file updated | 28 March 2019 18:01 CET | Update | N/A |
| article html file updated | 27 March 2018 15:11 CEST | Update | N/A |
| article html file updated | 24 January 2018 11:18 CET | Original file | N/A |
| article xml uploaded. | 24 January 2018 11:16 CET | Original file | https://www.mdpi.com/2297-8739/5/1/9/xml |
| article pdf uploaded. | 24 January 2018 11:16 CET | Version of Record | https://www.mdpi.com/2297-8739/5/1/9/pdf |
