| article html file updated | 7 February 2020 08:04 CET | Update | https://www.mdpi.com/2304-6732/3/2/23 |
| article html file updated | 5 May 2019 17:01 CEST | Update | - |
| article html file updated | 27 March 2019 03:31 CET | Update | - |
| article html file updated | 1 July 2016 13:32 CEST | Update | - |
| article html file updated | 30 April 2016 11:09 CEST | Original file | - |
| article xml uploaded. | 30 April 2016 11:08 CEST | Original file | https://www.mdpi.com/2304-6732/3/2/23/xml |
| article pdf uploaded. | 30 April 2016 11:08 CEST | Version of Record | https://www.mdpi.com/2304-6732/3/2/23/pdf |
