I D Patel, D. G. P. P. S. P. (2008) “Studies on variability of some morphological characters in fennel (Foeniculum vulgare Mill.) 1”, Journal of Spices and Aromatic Crops, 17(1), pp. 29–32. Available at: https://www.updatepublishing.com/journal/index.php/josac/article/view/4891 (Accessed: 5 October 2025).