Firstly, 4 books with mathematical results in an emerging area of finite group theory, some of which are original (1st June 2021).
Secondly, 3 books which are modern picture books about Birkenshaw in West Yorkshire, UK, together with social and historical commentary.
Thirdly booklets explaining the origin of names. There is also a page devoted to database applications that I have written. Here you can find software to perform vector and matrix manipulations, in the Microsoft environment. In the free version you can plot graphs of vectors and matrices (contour plots), save the graphs in various file formats for reports, and view vectors and matrices in an editor whilst designing a routine or application. You can also perform calculations using the powerful SVD decomposition, matrix Eigenvalue and Eigenvector calculations, non-linear fitting routines, and the Fast Fourier Transforms. The software is particularly useful for using in traditional lidar developments.
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At the moment the English documents and wording must be regarded as definitive.