| article html file updated | 8 February 2020 22:47 CET | Update | https://www.mdpi.com/2075-4663/5/4/90 |
| article html file updated | 28 September 2019 21:40 CEST | Update | N/A |
| article html file updated | 2 May 2019 11:24 CEST | Update | N/A |
| article html file updated | 18 April 2019 09:02 CEST | Update | N/A |
| article html file updated | 2 January 2018 10:58 CET | Update | N/A |
| article html file updated | 1 December 2017 12:14 CET | Original file | N/A |
| article xml uploaded. | 1 December 2017 12:13 CET | Original file | https://www.mdpi.com/2075-4663/5/4/90/xml |
| article pdf uploaded. | 1 December 2017 12:13 CET | Version of Record | https://www.mdpi.com/2075-4663/5/4/90/pdf |
