| article html file updated | 9 February 2020 21:55 CET | Update | https://www.mdpi.com/2297-8739/5/2/33 |
| article html file updated | 4 October 2019 17:11 CEST | Update | - |
| article html file updated | 30 April 2019 09:48 CEST | Update | - |
| article html file updated | 16 April 2019 10:11 CEST | Update | - |
| article html file updated | 16 April 2019 05:16 CEST | Update | - |
| article html file updated | 30 March 2019 11:56 CET | Update | - |
| article html file updated | 27 June 2018 09:48 CEST | Update | - |
| article html file updated | 19 June 2018 03:36 CEST | Original file | - |
| article pdf uploaded. | 19 June 2018 03:35 CEST | Version of Record | https://www.mdpi.com/2297-8739/5/2/33/pdf |
| article xml uploaded. | 19 June 2018 03:35 CEST | Update | https://www.mdpi.com/2297-8739/5/2/33/xml |
| article xml file uploaded | 19 June 2018 03:35 CEST | Original file | - |
