YI-FANG CHANG, Dr.. Multiply Connected Topological Economics, Nonlinear Theory of Economic Growth and Its Three Laws, and Four Theorems on Knowledge Economic Theory. Global Journal of Science Frontier Research, [S.l.], v. 12, n. 13-F, nov. 2012. ISSN 2249-4626. Available at: <https://journalofscience.org/index.php/GJSFR/article/view/678>. Date accessed: 18 may 2022.