| article html file updated | 7 February 2020 04:51 CET | Update | https://www.mdpi.com/2304-8158/5/1/13 |
| article html file updated | 21 September 2019 11:45 CEST | Update | - |
| article html file updated | 5 May 2019 23:39 CEST | Update | - |
| article html file updated | 26 March 2019 21:21 CET | Update | - |
| article html file updated | 28 March 2016 11:56 CEST | Original file | - |
| article pdf uploaded. | 23 February 2016 16:36 CET | Version of Record | https://www.mdpi.com/2304-8158/5/1/13/pdf |
| article xml uploaded. | 23 February 2016 16:36 CET | Original file | https://www.mdpi.com/2304-8158/5/1/13/xml |
