Cristea, Teodor, Corina Cristea, Neculai Dragomir, Gheorghe Carciu, Simion Alda, és Liana Maria Alda. 2013. „Biological Fixation of the Nitrogen (NFB) in the Temporary Grasslands With Festuca Rubra L”. Review on Agriculture and Rural Development 2 (1):190-94. https://www.iskolakultura.hu/index.php/rard/article/view/13306.