Volume 31
- Volume 31, Issue 4
- Special Issue on "Digital healthcare services" and general research
- Volume 31, Issue 3
- Special Issue on "Artificial Intelligence (AI) and Robotics in Travel, Tourism and Leisure" and general research
- Volume 31, Issue 2
- Special Issue on "Recommendation Systems (RS) in Electronic Markets" and on "Hybrid Intelligence in Business Networks" and general research
- Volume 31, Issue 1
- Special Issue on "Internet of Things for Electronic Markets " and general research