| article html file updated | 9 February 2020 21:21 CET | Update | https://www.mdpi.com/2227-7102/8/2/88 |
| article html file updated | 4 October 2019 13:30 CEST | Update | - |
| article html file updated | 30 April 2019 11:14 CEST | Update | - |
| article html file updated | 16 April 2019 11:39 CEST | Update | - |
| article html file updated | 16 April 2019 06:30 CEST | Update | - |
| article html file updated | 30 March 2019 10:27 CET | Update | - |
| article html file updated | 27 June 2018 09:24 CEST | Update | - |
| article html file updated | 13 June 2018 11:12 CEST | Original file | - |
| article pdf uploaded. | 13 June 2018 11:11 CEST | Version of Record | https://www.mdpi.com/2227-7102/8/2/88/pdf |
| article xml uploaded. | 13 June 2018 11:11 CEST | Update | https://www.mdpi.com/2227-7102/8/2/88/xml |
| article xml file uploaded | 13 June 2018 11:11 CEST | Original file | - |
