| article html file updated | 6 February 2020 06:59 CET | Update | https://www.mdpi.com/2220-9964/3/1/110 |
| article html file updated | 7 May 2019 19:16 CEST | Update | N/A |
| article html file updated | 21 March 2019 11:39 CET | Update | N/A |
| article html file updated | 19 August 2015 18:57 CEST | Update | N/A |
| article html file updated | 24 June 2014 12:11 CEST | Original file | N/A |
| article xml file uploaded | 24 June 2014 12:11 CEST | Original file | https://www.mdpi.com/2220-9964/3/1/110/xml |
| article pdf uploaded. | 27 January 2014 15:04 CET | Version of Record | https://www.mdpi.com/2220-9964/3/1/110/pdf |
