| article html file updated | 8 February 2020 08:35 CET | Update | https://www.mdpi.com/2075-4663/5/2/42 |
| article html file updated | 25 September 2019 10:00 CEST | Update | - |
| article html file updated | 3 May 2019 16:53 CEST | Update | - |
| article html file updated | 29 June 2017 11:51 CEST | Update | - |
| article html file updated | 17 June 2017 13:32 CEST | Original file | - |
| article xml uploaded. | 17 June 2017 13:31 CEST | Original file | https://www.mdpi.com/2075-4663/5/2/42/xml |
| article pdf uploaded. | 17 June 2017 13:31 CEST | Version of Record | https://www.mdpi.com/2075-4663/5/2/42/pdf |
