| article html file updated | 7 February 2020 01:44 CET | Update | https://www.mdpi.com/1999-4915/7/12/2939 |
| article html file updated | 21 September 2019 07:13 CEST | Update | N/A |
| article html file updated | 6 May 2019 05:59 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:42 CET | Original file | N/A |
| article xml uploaded. | 3 December 2015 17:16 CET | Update | https://www.mdpi.com/1999-4915/7/12/2939/xml |
| article pdf uploaded. | 3 December 2015 17:05 CET | Updated version of record | https://www.mdpi.com/1999-4915/7/12/2939/pdf |
| article pdf uploaded. | 3 December 2015 14:09 CET | Version of Record | N/A |
| article xml uploaded. | 3 December 2015 14:09 CET | Original file | N/A |
