Fix link to WICSA paper

index.md

@@ -63,7 +63,7 @@ You can find more explanations and examples on Medium [Y-Statements - A Light Te
 
 - Overview: [Architectural Decision Records](https://github.com/joelparkerhenderson/architecture_decision_record): collection of markdown templates converted to Markdown
 - [MADR](https://adr.github.io/madr/): The Markdown Architecture Decision Records (MADR: `[ˈmæɾɚ]`). Lean ADRs to quickly document architectural decisions in code. - Slogan: architectural decisions that [matter `[ˈmæɾɚ]`](https://en.wiktionary.org/wiki/matter#Pronunciation).
-- Comparison of seven templates: [Architectural Decision Guidance Across Projects - Problem Space Modeling, Decision Backlog Management and Cloud Computing Knowledge](http://www.ifs.hsr.ch/fileadmin/user_upload/customers/ifs.hsr.ch/Home/projekte/ADMentor-WICSA2015ubmissionv11nc.pdf). WICSA 2015: 85-94.
+- Comparison of seven templates: [Architectural Decision Guidance Across Projects - Problem Space Modeling, Decision Backlog Management and Cloud Computing Knowledge](https://www.ost.ch/fileadmin/dateiliste/3_forschung_dienstleistung/institute/ifs/cloud-application-lab/admentor-wicsa2015ubmissionv11nc.pdf). WICSA 2015: 85-94.
 - Context, background and examples of good and bad justifications can be found in [this blog post](https://www.ozimmer.ch/practices/2020/04/27/ArchitectureDecisionMaking.html).
 - [DecisionCapture](https://schubmat.github.io/DecisionCapture/): Templates for agile projects and explanation of the ADR universe, with [example](https://github.com/schubmat/DecisionCapture/blob/master/samples/samples_merged/samples_simpleTemplate_secondSprint.md).
 - cards42 has adopted the Y-statement template in its German [ADR card](https://cards42.org#adr); the English version is similar, but adds state information.