Balcar , J. (2007). Real approach to Phillips’ curve. Записки Горного института, 170(2), 177-183. извлечено от https://pmi.spmi.ru/pmi/article/view/7745

Balcar , J. (2007). Real approach to Phillips’ curve. Journal of Mining Institute, 170(2), 177-183. Retrieved from https://pmi.spmi.ru/pmi/article/view/7745