| article html file updated | 8 February 2020 23:09 CET | Update | https://www.mdpi.com/2223-7747/6/4/59 |
| article html file updated | 28 September 2019 23:54 CEST | Update | N/A |
| article html file updated | 2 May 2019 10:37 CEST | Update | N/A |
| article html file updated | 18 April 2019 08:14 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:19 CET | Update | N/A |
| article html file updated | 5 December 2017 12:50 CET | Original file | N/A |
| article xml uploaded. | 5 December 2017 12:49 CET | Update | https://www.mdpi.com/2223-7747/6/4/59/xml |
| article xml uploaded. | 5 December 2017 12:49 CET | Original file | N/A |
| article pdf uploaded. | 5 December 2017 12:49 CET | Version of Record | https://www.mdpi.com/2223-7747/6/4/59/pdf |
