| article html file updated | 7 February 2020 03:48 CET | Update | https://www.mdpi.com/2227-9032/4/1/13 |
| article html file updated | 6 May 2019 01:52 CEST | Update | N/A |
| article html file updated | 26 March 2019 19:12 CET | Update | N/A |
| article html file updated | 18 May 2016 12:21 CEST | Original file | N/A |
| article pdf uploaded. | 23 January 2016 08:24 CET | Updated version of record | https://www.mdpi.com/2227-9032/4/1/13/pdf |
| article xml uploaded. | 23 January 2016 08:24 CET | Update | https://www.mdpi.com/2227-9032/4/1/13/xml |
| article pdf uploaded. | 23 January 2016 08:17 CET | Version of Record | N/A |
| article xml uploaded. | 23 January 2016 08:17 CET | Original file | N/A |
