| article html file updated | 8 February 2020 07:31 CET | Update | https://www.mdpi.com/2304-6732/4/2/38 |
| article html file updated | 25 September 2019 04:25 CEST | Update | - |
| article html file updated | 3 May 2019 18:54 CEST | Update | - |
| article html file updated | 29 June 2017 12:55 CEST | Update | - |
| article html file updated | 6 June 2017 07:00 CEST | Original file | - |
| article xml uploaded. | 6 June 2017 06:59 CEST | Update | https://www.mdpi.com/2304-6732/4/2/38/xml |
| article pdf uploaded. | 6 June 2017 06:59 CEST | Updated version of record | https://www.mdpi.com/2304-6732/4/2/38/pdf |
| article pdf uploaded. | 5 June 2017 14:31 CEST | Version of Record | https://www.mdpi.com/2304-6732/4/2/38/pdf-vor |
