| article html file updated | 6 February 2020 16:59 CET | Update | https://www.mdpi.com/2075-4701/5/2/504 |
| article html file updated | 6 May 2019 23:06 CEST | Update | N/A |
| article html file updated | 25 March 2019 23:35 CET | Update | N/A |
| article html file updated | 21 August 2015 09:22 CEST | Update | N/A |
| article html file updated | 7 July 2015 12:52 CEST | Original file | N/A |
| article xml file uploaded | 7 July 2015 12:52 CEST | Original file | https://www.mdpi.com/2075-4701/5/2/504/xml |
| article pdf uploaded. | 30 March 2015 08:43 CEST | Updated version of record | https://www.mdpi.com/2075-4701/5/2/504/pdf |
| article pdf uploaded. | 25 March 2015 15:32 CET | Version of Record | https://www.mdpi.com/2075-4701/5/2/504/pdf-vor |
