Siegfried Boecherer and Rainer Schulze-Pillot
We compute the central critical value of the triple product
$L$-function associated to three cusp forms $f_1,f_2,f_3$ with trivial
character for groups
$\Gamma_0(N_i)$ with square free levels $N_i$ not all of which
are $1$ and weights $k_i$ satisfying $k_1\ge k_2\ge k_3$ and
$k_1