@article {Bertola:Cubic,
	title = {Cubic string boundary value problems and Cauchy biorthogonal polynomials},
	journal = {J. Phys. A},
	volume = {42},
	number = {45},
	year = {2009},
	pages = {454006, 13},
	issn = {1751-8113},
	doi = {10.1088/1751-8113/42/45/454006},
	url = {http://0-dx.doi.org.mercury.concordia.ca/10.1088/1751-8113/42/45/454006},
	author = {Marco Bertola and Gekhtman, M. and Szmigielski, J.}
}
