Balcar , Jiri. 2007. "Real Approach to Phillips’ Curve". Записки Горного института 170 (2), 177-83. https://pmi.spmi.ru/pmi/article/view/7745.

Balcar , Jiri. 2007. "Real Approach to Phillips’ Curve". Journal of Mining Institute 170 (2), 177-83. https://pmi.spmi.ru/pmi/article/view/7745.