@article{02201538,
title = {Discrete orthogonality of Zernike functions.},
journal = {Mathematica Pannonica},
volume = {16},
year = {2005},
pages = {137-144},
zbl = {1082.42019},
language = {en},
url = {http://dml.mathdoc.fr/item/02201538}
}
Pap, Margit; Schipp, Ferenc. Discrete orthogonality of Zernike functions.. Mathematica Pannonica, Tome 16 (2005) pp. 137-144. http://gdmltest.u-ga.fr/item/02201538/