| article html file updated | 8 February 2020 02:47 CET | Update | https://www.mdpi.com/2227-7080/5/2/14 |
| article html file updated | 24 September 2019 03:21 CEST | Update | - |
| article html file updated | 4 May 2019 03:50 CEST | Update | - |
| article html file updated | 29 June 2017 11:54 CEST | Update | - |
| article html file updated | 2 April 2017 12:29 CEST | Original file | - |
| article xml uploaded. | 2 April 2017 12:28 CEST | Original file | https://www.mdpi.com/2227-7080/5/2/14/xml |
| article pdf uploaded. | 2 April 2017 12:28 CEST | Updated version of record | https://www.mdpi.com/2227-7080/5/2/14/pdf |
