| article html file updated | 6 February 2020 00:31 CET | Update | https://www.mdpi.com/2218-273X/3/1/157 |
| article html file updated | 8 May 2019 08:30 CEST | Update | N/A |
| article html file updated | 20 March 2019 18:34 CET | Update | N/A |
| article html file updated | 21 March 2018 08:28 CET | Update | N/A |
| article html file updated | 17 June 2015 06:33 CEST | Update | N/A |
| article html file updated | 28 April 2014 10:32 CEST | Original file | N/A |
| article xml file uploaded | 28 April 2014 10:32 CEST | Original file | https://www.mdpi.com/2218-273X/3/1/157/xml |
| article pdf uploaded. | 11 February 2013 08:35 CET | Version of Record | https://www.mdpi.com/2218-273X/3/1/157/pdf |
