TY - JOUR T1 - On the Theory of the Solution of a System of Simultaneous Non-Linear Partial Differential Equations of the First Order JF - Proceedings of the Royal Society of London (1854-1905) VL - 24 SP - 337 EP - 344 PY - 1875/01/01/ UR - http://dx.doi.org/10.1098/rspl.1875.0044 M3 - doi:10.1098/rspl.1875.0044 AU - Nanson, E. ER -