@article {Bertola:PDEBOPs,
	title = {The PDEs of biorthogonal polynomials arising in the two-matrix model},
	journal = {Math. Phys. Anal. Geom.},
	volume = {9},
	number = {1},
	year = {2006},
	pages = {23{\textendash}52},
	issn = {1385-0172},
	author = {Marco Bertola and B. Eynard}
}
