| article html file updated | 9 February 2020 14:38 CET | Update | https://www.mdpi.com/2227-7102/8/2/56 |
| article html file updated | 1 May 2019 01:54 CEST | Update | - |
| article html file updated | 17 April 2019 02:28 CEST | Update | - |
| article html file updated | 29 March 2019 17:34 CET | Update | - |
| article html file updated | 27 June 2018 09:15 CEST | Update | - |
| article html file updated | 20 April 2018 10:57 CEST | Original file | - |
| article pdf uploaded. | 20 April 2018 10:56 CEST | Version of Record | https://www.mdpi.com/2227-7102/8/2/56/pdf |
| article xml uploaded. | 20 April 2018 10:56 CEST | Update | https://www.mdpi.com/2227-7102/8/2/56/xml |
| article xml file uploaded | 20 April 2018 10:56 CEST | Original file | - |
