jp/LAW/heimencho.html 平面直角座標系(平成14年国土交通省告示第9号) ^ a b c A Guide to coordinate systems in Great Britain v1.7 Oct 2007 D00659 accessed 14.4.2008 ^ https://www
The first commercial licensing of CP/M took place in 1975 with contracts between Digital Systems(英語版) and Omron of America for use in their intelligent
differential equations and dynamical systems. en:Springer Science & Business Media. Izhikevich, E. M. (2007). Dynamical systems in neuroscience. MIT press. Katok
Differential equations and dynamical systems (Vol. 7). Springer Science & Business Media. ^ Izhikevich, E. M. (2007). Dynamical systems in neuroscience. MIT Press