| article html file updated | 8 February 2020 06:02 CET | Update | https://www.mdpi.com/2306-5354/4/2/44 |
| article html file updated | 24 September 2019 20:50 CEST | Update | N/A |
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| article html file updated | 28 June 2017 12:37 CEST | Update | N/A |
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| article html file updated | 17 May 2017 10:51 CEST | Original file | N/A |
| article xml uploaded. | 17 May 2017 10:50 CEST | Original file | https://www.mdpi.com/2306-5354/4/2/44/xml |
| article pdf uploaded. | 17 May 2017 10:50 CEST | Version of Record | https://www.mdpi.com/2306-5354/4/2/44/pdf |
