OR Spectrum publishes applied and theoretical papers which contribute to Operations Research as a scientific instrument for the development and application of quantitative approaches for problem-solving and decision-making in management. It addresses all persons from university, industry, business and administration interested in innovative applications of quantitative methods as well as in advances in theory and techniques with relevance to practice. The journal provides an international forum for academics and practitioners from areas such as quantitative management science, mathematical operations research, and related fields of engineering and information systems. It publishes high-quality, original papers belonging to the following types of contributions: Surveys, theoretical papers, application-oriented papers, and case studies. Papers must be written in English. All contributions are reviewed by at least two referees.