| article html file updated | 6 February 2020 20:42 CET | Update | https://www.mdpi.com/2076-3921/4/3/523 |
| article html file updated | 6 May 2019 15:43 CEST | Update | N/A |
| article html file updated | 26 March 2019 06:40 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 | Original file | https://www.mdpi.com/2076-3921/4/3/523/xml |
| article html file updated | 21 August 2015 14:53 CEST | Original file | N/A |
| article pdf uploaded. | 15 July 2015 16:04 CEST | Version of Record | https://www.mdpi.com/2076-3921/4/3/523/pdf |
