| article html file updated | 7 February 2020 19:00 CET | Update | https://www.mdpi.com/2311-5521/1/4/39 |
| article html file updated | 22 September 2019 08:26 CEST | Update | N/A |
| article html file updated | 4 May 2019 20:32 CEST | Update | N/A |
| article html file updated | 27 October 2017 10:18 CEST | Update | N/A |
| article html file updated | 7 December 2016 07:47 CET | Update | N/A |
| article xml uploaded. | 7 December 2016 07:46 CET | Update | https://www.mdpi.com/2311-5521/1/4/39/xml |
| article pdf uploaded. | 7 December 2016 07:46 CET | Updated version of record | https://www.mdpi.com/2311-5521/1/4/39/pdf |
| article html file updated | 2 December 2016 10:54 CET | Original file | N/A |
| article xml uploaded. | 2 December 2016 10:52 CET | Update | N/A |
| article xml uploaded. | 2 December 2016 10:52 CET | Original file | N/A |
| article pdf uploaded. | 2 December 2016 10:52 CET | Version of Record | https://www.mdpi.com/2311-5521/1/4/39/pdf-vor |
