On the functional equation $f(x+y-xy) + f(xy) = f(x) + f(y)$
Matematički vesnik, Tome 20 (1968) no. 2, p. 177
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39B22
H. Swiatak. On the functional equation $f(x+y-xy) + f(xy) = f(x) + f(y)$. Matematički vesnik, Tome 20 (1968) no. 2, p. 177 . http://geodesic.mathdoc.fr/item/MV_1968_20_2_a5/
@article{MV_1968_20_2_a5,
author = {H. Swiatak},
title = {On the functional equation $f(x+y-xy) + f(xy) = f(x) + f(y)$},
journal = {Matemati\v{c}ki vesnik},
pages = {177 },
year = {1968},
volume = {20},
number = {2},
url = {http://geodesic.mathdoc.fr/item/MV_1968_20_2_a5/}
}