Sasvári, Lajos. Different responsiveness of Indian and European Great Tit (Parus major mahrattarum; P. m. major) to acoustic stimuli (англ.) // Journal of Ornithology. — 1980. — Vol. 121, no. 4. — P. 391—396. — ISSN0021-8375. — doi:10.1007/BF01643334.
Sasvári, Lajos. Different responsiveness of Indian and European Great Tit (Parus major mahrattarum; P. m. major) to acoustic stimuli (англ.) // Journal of Ornithology. — 1980. — Vol. 121, no. 4. — P. 391—396. — ISSN0021-8375. — doi:10.1007/BF01643334.