https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763013300004&signature=3664a2824e6ebb6c9343b08a55acffc7&articleTitle=Mathematical+and+Numerical+Modelling+in+Electrical+Engineering+Theory+and+Applications&articleAuthor=Michal+Kr%C3%ADzek%2C+Pekka+Neittaanm%C3%A4ki&publicationTitle=Mathematical+and+Numerical+Modelling+in+Electrical+Engineering+Theory+and+Applications&language=&publicationType=1&publishYear=1996&isn=9780792342496&publisher=Springer+Netherlands