| article html file updated | 9 February 2020 14:39 CET | Update | https://www.mdpi.com/2227-7102/8/2/57 |
| article html file updated | 2 October 2019 19:44 CEST | Update | - |
| article html file updated | 1 May 2019 01:52 CEST | Update | - |
| article html file updated | 17 April 2019 02:26 CEST | Update | - |
| article html file updated | 29 March 2019 17:36 CET | Update | - |
| article html file updated | 27 June 2018 09:15 CEST | Update | - |
| article html file updated | 25 May 2018 09:55 CEST | Update | - |
| article xml uploaded. | 25 May 2018 09:54 CEST | Update | https://www.mdpi.com/2227-7102/8/2/57/xml |
| article pdf uploaded. | 25 May 2018 09:54 CEST | Updated version of record | https://www.mdpi.com/2227-7102/8/2/57/pdf |
| article html file updated | 20 April 2018 12:04 CEST | Original file | - |
| article pdf uploaded. | 20 April 2018 12:03 CEST | Version of Record | https://www.mdpi.com/2227-7102/8/2/57/pdf-vor |
| article xml file uploaded | 20 April 2018 12:03 CEST | Original file | - |
