| article html file updated | 9 February 2020 10:32 CET | Update | https://www.mdpi.com/2309-608X/4/1/39 |
| article html file updated | 1 October 2019 19:15 CEST | Update | - |
| article html file updated | 1 May 2019 10:17 CEST | Update | - |
| article html file updated | 17 April 2019 10:08 CEST | Update | - |
| article html file updated | 29 March 2019 08:05 CET | Update | - |
| article html file updated | 28 March 2018 10:29 CEST | Update | - |
| article html file updated | 21 March 2018 10:28 CET | Original file | - |
| article xml uploaded. | 21 March 2018 10:26 CET | Update | https://www.mdpi.com/2309-608X/4/1/39/xml |
| article pdf uploaded. | 21 March 2018 10:26 CET | Updated version of record | https://www.mdpi.com/2309-608X/4/1/39/pdf |
| article pdf uploaded. | 20 March 2018 17:29 CET | Version of Record | https://www.mdpi.com/2309-608X/4/1/39/pdf-vor |
