Geodesic
Graf's Addition Theorem Obtained from $SO(3)$ Contraction
Teoretičeskaâ i matematičeskaâ fizika, Tome 129 (2001) no. 2, pp. 227-229 
P. Winternitz; K. B. Wolf; G. S. Pogosyan; G. S. Pogosyan; A. N. Sisakyan. Graf's Addition Theorem Obtained from $SO(3)$ Contraction. Teoretičeskaâ i matematičeskaâ fizika, Tome 129 (2001) no. 2, pp. 227-229. http://geodesic.mathdoc.fr/item/TMF_2001_129_2_a4/
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     title = {Graf's {Addition} {Theorem} {Obtained} from $SO(3)$ {Contraction}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2001_129_2_a4/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We show that Graf's addition theorem for Bessel functions is obtained by contraction of the composition formula for $SO(3)$ rotations.

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