SRIVASTAVA, S., ARUN KUMAR, N.P. KASHYAP, Y.S. CHANDEL, and DESH RAJ. 1995. “A NEW DEVICE TO PROTECT HONEY BEES FROM THE PREDATORY WASPS AT THE HIVE ENTRANCE OF APIS MELLIFERA L. COLONIES”. UTTAR PRADESH JOURNAL OF ZOOLOGY 15 (3):165-71. https://www.mbimph.com/index.php/UPJOZ/article/view/1310.