| article html file updated | 8 February 2020 23:51 CET | Update | https://www.mdpi.com/2227-7390/5/4/77 |
| article html file updated | 29 September 2019 03:50 CEST | Update | N/A |
| article html file updated | 2 May 2019 09:03 CEST | Update | N/A |
| article html file updated | 18 April 2019 06:48 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:36 CET | Update | N/A |
| article html file updated | 13 December 2017 12:43 CET | Original file | N/A |
| article xml uploaded. | 13 December 2017 12:42 CET | Original file | https://www.mdpi.com/2227-7390/5/4/77/xml |
| article pdf uploaded. | 13 December 2017 12:42 CET | Updated version of record | https://www.mdpi.com/2227-7390/5/4/77/pdf |
| article pdf uploaded. | 12 December 2017 12:12 CET | Version of Record | https://www.mdpi.com/2227-7390/5/4/77/pdf-vor |
