| article html file updated | 7 February 2020 02:31 CET | Update | https://www.mdpi.com/1660-4601/13/1/57 |
| article html file updated | 21 September 2019 08:21 CEST | Update | - |
| article html file updated | 6 May 2019 04:23 CEST | Update | - |
| article html file updated | 26 March 2019 16:56 CET | Original file | - |
| article xml uploaded. | 22 December 2015 18:01 CET | Update | https://www.mdpi.com/1660-4601/13/1/57/xml |
| article pdf uploaded. | 22 December 2015 17:59 CET | Updated version of record | https://www.mdpi.com/1660-4601/13/1/57/pdf |
| article pdf uploaded. | 22 December 2015 16:27 CET | Version of Record | - |
| article xml uploaded. | 22 December 2015 16:27 CET | Original file | - |
