| article html file updated | 8 February 2020 03:00 CET | Update | https://www.mdpi.com/2304-6775/5/2/8 |
| article html file updated | 24 September 2019 04:30 CEST | Update | - |
| article html file updated | 4 May 2019 03:22 CEST | Update | - |
| article html file updated | 29 June 2017 12:21 CEST | Update | - |
| article html file updated | 10 April 2017 03:44 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 03:43 CEST | Original file | https://www.mdpi.com/2304-6775/5/2/8/xml |
| article pdf uploaded. | 10 April 2017 03:43 CEST | Updated version of record | https://www.mdpi.com/2304-6775/5/2/8/pdf |
| article pdf uploaded. | 6 April 2017 10:44 CEST | Version of Record | https://www.mdpi.com/2304-6775/5/2/8/pdf-vor |
