C. Landwehr, и O. Tüscher. Ungleichheit: Interdisziplinäre Perspektiven auf Ursachen und Implikationen, Mercator Science-Policy Fellowship-Programm, Frankfurt am Main, https://ipp-mainz.uni-mainz.de/files/2019/01/PolicyPaper2_Ungleichheit_final_20190114.pdf#page=38. (GLES).(2018)
J. Solà, J. Deray, и D. Atchuthan. (2018)cite arxiv:1812.01537Comment: 17 pages, 12 figures, 7 boxed examples, 193 numbered equations. V2 add chapter with a application examples. V3 fix biblio error and remove the reference to a not-yet-published library in C++. V4 add again the reference to the C++ library "manif", which is made available with this version 4. V5 fix formulas (163) and (179). V6, V7 fix typos. V8 fix sign in eq 149.