| article html file updated | 7 February 2020 10:32 CET | Update | https://www.mdpi.com/2227-7080/4/2/18 |
| article html file updated | 5 May 2019 12:15 CEST | Update | N/A |
| article html file updated | 27 March 2019 08:07 CET | Update | N/A |
| article html file updated | 22 June 2016 10:31 CEST | Update | N/A |
| article xml uploaded. | 22 June 2016 10:29 CEST | Update | https://www.mdpi.com/2227-7080/4/2/18/xml |
| article pdf uploaded. | 22 June 2016 10:29 CEST | Updated version of record | https://www.mdpi.com/2227-7080/4/2/18/pdf |
| article html file updated | 22 June 2016 08:25 CEST | Original file | N/A |
