@article{AFM_1981_6_2_a1,
     author = {P. Bhattacharyya and Y. E. Arumaraj},
     title = {On the iteration of polynomials of degree 4 with real coefficients},
     journal = {Annales Fennici Mathematici},
     pages = {197--203},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1981},
     doi = {10.5186/aasfm.1981.0605},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1981.0605/}
}