| article html file updated | 13 August 2026 17:09 CEST | Update | https://www.mdpi.com/2071-1050/7/4/3714 |
| article html file updated | 6 February 2020 17:06 CET | Update | N/A |
| article html file updated | 20 September 2019 19:26 CEST | Update | N/A |
| article html file updated | 6 May 2019 22:54 CEST | Update | N/A |
| article html file updated | 25 March 2019 23:46 CET | Update | N/A |
| article html file updated | 21 August 2015 09:35 CEST | Update | N/A |
| article html file updated | 27 April 2015 11:40 CEST | Original file | N/A |
| article xml file uploaded | 27 April 2015 11:40 CEST | Original file | https://www.mdpi.com/2071-1050/7/4/3714/xml |
| article pdf uploaded. | 31 March 2015 14:14 CEST | Updated version of record | https://www.mdpi.com/2071-1050/7/4/3714/pdf |
| article pdf uploaded. | 30 March 2015 11:29 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/4/3714/pdf-vor |
