Willis, Barton L. A new approach to static force-free electromagnetic fields. (English) Zbl 1059.78005 J. Math. Phys. 43, No. 5, 2610-2615 (2002). MSC: 78A25 PDFBibTeX XMLCite \textit{B. L. Willis}, J. Math. Phys. 43, No. 5, 2610--2615 (2002; Zbl 1059.78005) Full Text: DOI
Willis, Barton L. Electromagnetic momenta for systems of charged particles. (English) Zbl 0729.58053 J. Math. Phys. 32, No. 5, 1400-1402 (1991). MSC: 58Z05 78A35 PDFBibTeX XMLCite \textit{B. L. Willis}, J. Math. Phys. 32, No. 5, 1400--1402 (1991; Zbl 0729.58053) Full Text: DOI
Willis, Barton L. Conservation of angular momentum for systems of charged particles. (English) Zbl 0668.70025 J. Math. Phys. 30, No. 3, 732-734 (1989). MSC: 70H40 70Sxx 78A35 83A05 PDFBibTeX XMLCite \textit{B. L. Willis}, J. Math. Phys. 30, No. 3, 732--734 (1989; Zbl 0668.70025) Full Text: DOI