| article html file updated | 7 February 2020 07:36 CET | Update | https://www.mdpi.com/2073-4360/8/4/156 |
| article html file updated | 21 September 2019 15:40 CEST | Update | N/A |
| article html file updated | 5 May 2019 17:57 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:35 CET | Update | N/A |
| article html file updated | 15 March 2019 12:10 CET | Update | N/A |
| article html file updated | 29 April 2016 10:03 CEST | Update | N/A |
| article html file updated | 21 April 2016 15:43 CEST | Original file | N/A |
| article xml uploaded. | 21 April 2016 15:41 CEST | Original file | https://www.mdpi.com/2073-4360/8/4/156/xml |
| article pdf uploaded. | 21 April 2016 15:41 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/4/156/pdf |
