Measurement and Rating of Software-induced Energy Consumption of Desktop PCs and Servers. - Markus Dick; Eva Kern; Jakob Drangmeister; Stefan Naumann; Timo Johann (EnviroInfo, 2011)

Green Software and Green IT: An End Users Perspective. - Eva Kern; Markus Dick; Timo Johann; Stefan Naumann (ITEE, 2011)

The GREENSOFT Model: A reference model for green and sustainable software and its engineering. - Stefan Naumann; Markus Dick; Eva Kern; Timo Johann (Sustain. Comput. Informatics Syst., 2011)

Green Web Engineering - Measurements and Findings. - Markus Dick; Eva Kern; Timo Johann; Stefan Naumann; Christian Gülden (EnviroInfo, 2012)

Environmental Informatics Prize for Students: Towards more Transparency in Supporting a Green Web. - Eva Kern; Kai Benjamin Heinz; Tim Hiller; Timo Johann (EnviroInfo, 2012)

How to measure energy-efficiency of software: Metrics and measurement results. - Timo Johann; Markus Dick; Stefan Naumann; Eva Kern (GREENS, 2012)

The Social Dimension of Sustainability in Requirements Engineering. - Timo Johann; Walid Maalej (RE4SuSy@RE, 2013)

Liquid Democracy for a Sustainable and Scalable Participation in Requirements Engineering. - Timo Johann; Walid Maalej (RE4SuSy@RE, 2014)

Democratic mass participation of users in Requirements Engineering? - Timo Johann; Walid Maalej (RE, 2015)

Sustainable Software Engineering: Process and Quality Models, Life Cycle, and Social Aspects. - Stefan Naumann; Eva Kern; Markus Dick; Timo Johann (ICT Innovations for Sustainability, 2015)

Toward Data-Driven Requirements Engineering. - Walid Maalej; Maleknaz Nayebi; Timo Johann; Guenther Ruhe (IEEE Softw., 2016)

On the Emotion of Users in App Reviews. - Daniel Martens; Timo Johann (SEmotion@ICSE, 2017)

SAFE: A Simple Approach for Feature Extraction from App Descriptions and App Reviews. - Timo Johann; Christoph Stanik; Alireza M. Alizadeh B.; Walid Maalej (RE, 2017)

GreCo: Green code of ethics. - María Ángeles Moraga; Ignacio García Rodríguez de Guzmán; Coral Calero; Timo Johann; Gianantonio Me; Harald Münzel; Julia Kindelsberger (J. Softw. Evol. Process., 2017)

Research on NLP for RE at the University of Hamburg: A Report. - Davide Fucci; Christoph Stanik; Lloyd Montgomery; Zijad Kurtanovic; Timo Johann; Walid Maalej (REFSQ Workshops, 2018)