| article html file updated | 7 February 2020 04:26 CET | Update | https://www.mdpi.com/2079-3197/4/1/8 |
| article html file updated | 6 May 2019 00:39 CEST | Update | N/A |
| article html file updated | 26 March 2019 20:26 CET | Update | N/A |
| article html file updated | 29 March 2016 11:14 CEST | Update | N/A |
| article html file updated | 29 March 2016 07:36 CEST | Original file | N/A |
| article pdf uploaded. | 16 February 2016 05:17 CET | Updated version of record | https://www.mdpi.com/2079-3197/4/1/8/pdf |
| article xml uploaded. | 16 February 2016 05:17 CET | Original file | https://www.mdpi.com/2079-3197/4/1/8/xml |
| article pdf uploaded. | 6 February 2016 10:46 CET | Version of Record | https://www.mdpi.com/2079-3197/4/1/8/pdf-vor |
