| article html file updated | 8 February 2020 23:20 CET | Update | https://www.mdpi.com/2227-7390/5/4/74 |
| article html file updated | 2 May 2019 10:12 CEST | Update | N/A |
| article html file updated | 18 April 2019 07:50 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:36 CET | Update | N/A |
| article html file updated | 13 December 2017 12:18 CET | Original file | N/A |
| article xml uploaded. | 13 December 2017 12:17 CET | Original file | https://www.mdpi.com/2227-7390/5/4/74/xml |
| article pdf uploaded. | 13 December 2017 12:17 CET | Updated version of record | https://www.mdpi.com/2227-7390/5/4/74/pdf |
| article pdf uploaded. | 6 December 2017 12:28 CET | Version of Record | https://www.mdpi.com/2227-7390/5/4/74/pdf-vor |
