| article html file updated | 6 February 2020 20:29 CET | Update | https://www.mdpi.com/2076-3921/4/3/498 |
| article html file updated | 6 May 2019 16:09 CEST | Update | N/A |
| article html file updated | 26 March 2019 06:13 CET | Update | N/A |
| article html file updated | 14 October 2015 08:44 CEST | Update | N/A |
| article xml file uploaded | 14 October 2015 08:44 CEST | Update | https://www.mdpi.com/2076-3921/4/3/498/xml |
| article html file updated | 7 September 2015 11:52 CEST | Update | N/A |
| article xml file uploaded | 7 September 2015 11:52 CEST | Original file | N/A |
| article html file updated | 21 August 2015 14:36 CEST | Original file | N/A |
| article pdf uploaded. | 10 July 2015 09:28 CEST | Updated version of record | https://www.mdpi.com/2076-3921/4/3/498/pdf |
| article pdf uploaded. | 9 July 2015 12:06 CEST | Version of Record | https://www.mdpi.com/2076-3921/4/3/498/pdf-vor |
