| A unified building model for 3D urban GIS M El-Mekawy, A Östman, I Hijazi ISPRS International Journal of Geo-Information 1 (2), 120-145, 2012 | 173 | 2012 |
| Towards interoperating CityGML and IFC building models: A unified model based approach M El-Mekawy, A Östman, K Shahzad Advances in 3D geo-information sciences, 73-93, 2010 | 104 | 2010 |
| An evaluation of IFC-CityGML unidirectional conversion M El-Mekawy, Ö b Anders, H c Ihab International Journal of Advanced Computer Science and Applications 3 (5), 2012 | 90 | 2012 |
| Semantic mapping: an ontology engineering method for integrating building models in IFC and CityGML M El-Mekawy, A Östman 3rd ISDE DIGITAL EARTH SUMMIT, 12-14 June,, 2010 | 83 | 2010 |
| Two-dimensional gap analysis: a tool for efficient conservation planning and biodiversity policy implementation P Angelstam, G Mikusiński, BI Rönnbäck, A Östman, M Lazdinis, ... AMBIO: A Journal of the Human Environment 32 (8), 527-534, 2003 | 79 | 2003 |
| Two-dimensional gap analysis: a tool for efficient conservation planning and biodiversity policy implementation P Angelstam, G Mikusiński, BI Rönnbäck, A Östman, M Lazdinis, ... AMBIO: A Journal of the Human Environment 32 (8), 527-534, 2003 | 79 | 2003 |
| A comparative test of photogrammetrically sampled digital elevation models K Torlegård, A Östman, R Lindgren Photogrammetria 41 (1), 1-16, 1986 | 65 | 1986 |
| Geoportal usability evaluation X He, H Persson, A Östman International Journal of Spatial Data Infrastructures Research 7, 88-106, 2012 | 47 | 2012 |
| Accuracy estimation of digital elevation data banks A Ostman Photogrammetric Engineering and Remote Sensing 53 (4), 425-430, 1987 | 43 | 1987 |
| Quality control of photogrammetrically sampled digital elevation models A Östman The Photogrammetric Record 12 (69), 333-341, 1987 | 33 | 1987 |
| Feasibility of building information models for 3D cadastre in unified city models M El-Mekawy, A Östman International Journal of E-Planning Research (IJEPR) 1 (4), 35-58, 2012 | 25 | 2012 |
| A unified building model for a real 3D cadastral system M El-Mekawy, A Östman Emerging issues, challenges, and opportunities in urban e-planning, 252-279, 2015 | 11 | 2015 |
| GeoTest: A Testing Environment for Swedish Geodata A Östman, I Abugessaisa, S Tanzilli, X He, M El-Mekawy GSDI 11 World Conference, Rotterdam, June 15-19, 2009, 13 s., 2009 | 9 | 2009 |
| Evaluation of environmental monitoring strategies BI Rönnbäck, ML Nordberg, A Olsson, A Östman AMBIO: A Journal of the Human Environment 32 (8), 495-501, 2003 | 9 | 2003 |
| Ontology engineering method for integrating building models: The case of IFC and CityGML M El-Mekawy, A Östman Universal Ontology of Geographic Space: Semantic Enrichment for Spatial Data …, 2012 | 8 | 2012 |
| Two-dimensional gap analysis: Improving strategic and tactic conservation planning and biodiversity policy implementation P Angelstam, M Lazdinis, G Mikusinski, JM Roberge, J Olsson, W Arnberg, ... Ambio 32, 526-533, 2003 | 8 | 2003 |
| Geospatial interoperability for IFC and CityGML: Challenges of existing building information databases M El-Mekawy, A Östman, K Shahzad Innovations 08th, IEEE Conference, Dubai, December 16-18, 2008 | 7 | 2008 |
| Semantic mapping: an ontology engineering method for integrating building models in IFC and CityGML, 3rd ISDE Digital Earth Summit, 12–14 June M El-Mekawy, A Östman Nessebar, Bulgaria, 2010 | 6 | 2010 |
| Network for testing GI services A Östman GIS Ostrava 2010, 24-27. 1. 2010, Ostrava, 6 s., 2010 | 5 | 2010 |
| Barriers for the implementation of GI standards and interoperability A Östman, J Nogueras, S Winter Proceedings of the 5th AGILE Conference on Geographic Information Science …, 2002 | 4 | 2002 |
