| article html file updated | 7 February 2020 21:14 CET | Update | https://www.mdpi.com/2297-8739/4/1/3 |
| article html file updated | 22 September 2019 20:06 CEST | Update | N/A |
| article html file updated | 4 May 2019 15:50 CEST | Update | N/A |
| article html file updated | 30 March 2017 03:31 CEST | Update | N/A |
| article html file updated | 11 January 2017 15:50 CET | Original file | N/A |
| article xml uploaded. | 11 January 2017 15:49 CET | Update | https://www.mdpi.com/2297-8739/4/1/3/xml |
| article xml uploaded. | 11 January 2017 15:49 CET | Original file | N/A |
| article pdf uploaded. | 11 January 2017 15:49 CET | Version of Record | https://www.mdpi.com/2297-8739/4/1/3/pdf |
