| article html file updated | 8 February 2020 04:00 CET | Update | https://www.mdpi.com/2304-6732/4/2/33 |
| article html file updated | 4 May 2019 01:26 CEST | Update | - |
| article html file updated | 29 June 2017 12:54 CEST | Update | - |
| article html file updated | 21 April 2017 14:32 CEST | Original file | - |
| article xml uploaded. | 21 April 2017 14:30 CEST | Update | https://www.mdpi.com/2304-6732/4/2/33/xml |
| article pdf uploaded. | 21 April 2017 14:30 CEST | Updated version of record | https://www.mdpi.com/2304-6732/4/2/33/pdf |
| article pdf uploaded. | 20 April 2017 12:18 CEST | Version of Record | https://www.mdpi.com/2304-6732/4/2/33/pdf-vor |
