helena sustar global

DRS 2016, Brighton, UK

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RSD5 2015 Symposium, Alberta, Canada

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EAD 2015, Paris, France  

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ServDes 2014, Lancaster, UK

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RESER 2014, Helsinki, Finland

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EAD 2013, Gothenburg, Sweden

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D4H, Sheffield, UK

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CHI 2013 Paris, France

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South CHI 2013 Maribor, Slovenia

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ERA 05, 2005, Copenhagen, Denmark

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IDEM 6, 1995, Alden Biessen, Belgium