| article html file updated | 8 February 2020 10:22 CET | Update | https://www.mdpi.com/2304-6732/4/3/40 |
| article html file updated | 25 September 2019 19:25 CEST | Update | - |
| article html file updated | 3 May 2019 13:35 CEST | Update | - |
| article html file updated | 30 September 2017 15:42 CEST | Update | - |
| article html file updated | 7 July 2017 08:06 CEST | Original file | - |
| article xml uploaded. | 7 July 2017 08:05 CEST | Original file | https://www.mdpi.com/2304-6732/4/3/40/xml |
| article pdf uploaded. | 7 July 2017 08:05 CEST | Version of Record | https://www.mdpi.com/2304-6732/4/3/40/pdf |
