The WITAS Unmanned Aerial Vehicle Project. - Patrik Dohrty; Gösta H. Granlund; Krzysztof Kuchcinski; Erik Sandewall; Klas Nordberg; Erik Skarman; Johan Wiklund (ECAI, 2000)

Relation Network Filters, a Network Based Estimation Technique. - Erik Skarman (PDPTA, 2007)