| article html file updated | 6 February 2020 10:29 CET | Update | https://www.mdpi.com/2075-4701/4/3/335 |
| article html file updated | 7 May 2019 12:04 CEST | Update | N/A |
| article html file updated | 21 March 2019 20:16 CET | Update | N/A |
| article html file updated | 20 August 2015 11:56 CEST | Update | N/A |
| article html file updated | 26 September 2014 09:54 CEST | Original file | N/A |
| article xml file uploaded | 26 September 2014 09:54 CEST | Original file | https://www.mdpi.com/2075-4701/4/3/335/xml |
| article pdf uploaded. | 7 July 2014 08:54 CEST | Version of Record | https://www.mdpi.com/2075-4701/4/3/335/pdf |
