@article {Bertola:2MM_extendedWhitham,
	title = {Two-matrix model with semiclassical potentials and extended Whitham hierarchy},
	journal = {J. Phys. A},
	volume = {39},
	number = {28},
	year = {2006},
	pages = {8823{\textendash}8855},
	issn = {0305-4470},
	author = {Marco Bertola}
}
