Geodesic
On the mutual change of values of a~function and its coefficients in the class of typically real functions
Zapiski Nauchnykh Seminarov POMI, Computational methods and algorithms. Part XXIV, Tome 395 (2011), pp. 20-30

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The paper coninues investigations of the well-known class $T$ of typically real functions $f(z)$ in the disk $U=\{z\colon|z|1\}$. The region of values of the system $\{c_2,c_3,f(z_1),f(z_2)\}$ in the class $T$ is studied. The region of values of $f(z_2)$ in the class of functions $f\in T$ with fixed values $c_2,c_3$ and $f(z_1)$ is determined. 
@article{ZNSL_2011_395_a2,
     author = {E. G. Goluzina},
     title = {On the mutual change of values of a~function and its coefficients in the class of typically real functions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {20--30},
     publisher = {mathdoc},
     volume = {395},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2011_395_a2/}
}
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E. G. Goluzina. On the mutual change of values of a~function and its coefficients in the class of typically real functions. Zapiski Nauchnykh Seminarov POMI, Computational methods and algorithms. Part XXIV, Tome 395 (2011), pp. 20-30. http://geodesic.mathdoc.fr/item/ZNSL_2011_395_a2/