| article html file updated | 9 February 2020 14:30 CET | Update | https://www.mdpi.com/2227-7102/8/2/53 |
| article html file updated | 2 October 2019 18:50 CEST | Update | - |
| article html file updated | 1 May 2019 02:09 CEST | Update | - |
| article html file updated | 17 April 2019 02:41 CEST | Update | - |
| article html file updated | 29 March 2019 17:15 CET | Update | - |
| article html file updated | 27 June 2018 09:15 CEST | Update | - |
| article html file updated | 19 April 2018 12:47 CEST | Original file | - |
| article pdf uploaded. | 19 April 2018 12:45 CEST | Version of Record | https://www.mdpi.com/2227-7102/8/2/53/pdf |
| article xml uploaded. | 19 April 2018 12:45 CEST | Update | https://www.mdpi.com/2227-7102/8/2/53/xml |
| article xml file uploaded | 19 April 2018 12:45 CEST | Original file | - |
