| article html file updated | 6 February 2020 14:46 CET | Update | https://www.mdpi.com/2077-1444/6/1/1 |
| article html file updated | 20 September 2019 16:24 CEST | Update | N/A |
| article html file updated | 7 May 2019 03:21 CEST | Update | N/A |
| article html file updated | 25 March 2019 19:47 CET | Update | N/A |
| article html file updated | 21 August 2015 04:51 CEST | Update | N/A |
| article html file updated | 27 January 2015 07:13 CET | Original file | N/A |
| article xml file uploaded | 27 January 2015 07:13 CET | Original file | https://www.mdpi.com/2077-1444/6/1/1/xml |
| article pdf uploaded. | 20 January 2015 08:24 CET | Updated version of record | https://www.mdpi.com/2077-1444/6/1/1/pdf |
| article pdf uploaded. | 24 December 2014 16:56 CET | Version of Record | https://www.mdpi.com/2077-1444/6/1/1/pdf-vor |
