L. Shakina, V. Strashnyuk, and V. Shakhbazov, “PECULIARITIES OF HOMOLOGOUS AND NONHOMOLOGOUS PAIRING OF POLYTENE CHROMOSOMES IN THE INBRED LINES AND HYBRIDS OF DROSOPHILA”, TJOVNKKNUSB, vol. 1, no. 709, pp. 105-110, Dec. 2005.