Kryuchkov, Igor Vladimirovich. 2020. „ISSUES AND PROSPECTS FOR THE DEVELOPMENT OF HUNGARIAN AGRICULTURE AT THE TURN OF THE XIX-TH AND XX-TH CENTURIES IN DISPATCHES OF RUSSIAN DIPLOMATS”. Közép-Európai Közlemények 13 (1-2):527-35. https://ojs.bibl.u-szeged.hu/index.php/vikekkek/article/view/33904.