| article html file updated | 8 February 2020 20:00 CET | Update | https://www.mdpi.com/2227-7390/5/4/59 |
| article html file updated | 28 September 2019 03:41 CEST | Update | N/A |
| article html file updated | 2 May 2019 17:43 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:34 CET | Update | N/A |
| article html file updated | 1 November 2017 05:51 CET | Original file | N/A |
| article xml uploaded. | 1 November 2017 05:26 CET | Original file | https://www.mdpi.com/2227-7390/5/4/59/xml |
| article pdf uploaded. | 1 November 2017 05:26 CET | Version of Record | https://www.mdpi.com/2227-7390/5/4/59/pdf |
