| article html file updated | 8 February 2020 03:06 CET | Update | https://www.mdpi.com/2304-6732/4/2/28 |
| article html file updated | 24 September 2019 05:09 CEST | Update | - |
| article html file updated | 4 May 2019 03:09 CEST | Update | - |
| article html file updated | 29 June 2017 12:53 CEST | Update | - |
| article html file updated | 7 April 2017 16:15 CEST | Original file | - |
| article xml uploaded. | 7 April 2017 16:14 CEST | Original file | https://www.mdpi.com/2304-6732/4/2/28/xml |
| article pdf uploaded. | 7 April 2017 16:14 CEST | Version of Record | https://www.mdpi.com/2304-6732/4/2/28/pdf |
