%0 Journal Article %J J. Phys. A %D 2015 %T The partition function of the extended $r$-reduced Kadomtsev-Petviashvili hierarchy %A Marco Bertola %A Di Yang %B J. Phys. A %V 48 %P 195205, 20 %G eng %U http://dx.doi.org/10.1088/1751-8113/48/19/195205 %R 10.1088/1751-8113/48/19/195205