| article html file updated | 8 February 2020 02:09 CET | Update | https://www.mdpi.com/2073-4425/8/4/108 |
| article html file updated | 23 September 2019 23:48 CEST | Update | - |
| article html file updated | 4 May 2019 05:14 CEST | Update | - |
| article html file updated | 28 April 2017 06:47 CEST | Update | - |
| article html file updated | 27 March 2017 05:30 CEST | Update | - |
| article html file updated | 26 March 2017 22:27 CEST | Update | - |
| article html file updated | 25 March 2017 22:27 CET | Update | - |
| article html file updated | 24 March 2017 22:31 CET | Update | - |
| article html file updated | 24 March 2017 11:39 CET | Original file | - |
| article xml uploaded. | 24 March 2017 11:38 CET | Original file | https://www.mdpi.com/2073-4425/8/4/108/xml |
| article pdf uploaded. | 24 March 2017 11:38 CET | Updated version of record | https://www.mdpi.com/2073-4425/8/4/108/pdf |
| article pdf uploaded. | 24 March 2017 10:12 CET | Version of Record | https://www.mdpi.com/2073-4425/8/4/108/pdf-vor |
