Y. Brihaye and M. Godard, “Quasi Exactly Solvable Extensions of the Lamé Equation,” Journal of Mathematical Physics, Vol. 34, No. 11, 1993, p. 5283. doi:10.1063/1.530304
has been cited by the following article:
TITLE: Matrix Quasi-Exactly Solvable Jacobi Elliptic Hamiltonian
AUTHORS: Ancilla Nininahazwe
KEYWORDS: Technology; Preference for Quality; Volume of Trade; Vertical Intra-Industry Trade
JOURNAL NAME: Open Journal of Microphysics, Vol.3 No.3, August 9, 2013
ABSTRACT: We construct a new example of 2 × 2-matrix quasi-exactly solvable (QES) Hamiltonian which is associated to a potential depending on the Jacobi elliptic functions. We establish three necessary and sufficient algebraic conditions for the previous operator to have an invariant vector space whose generic elements are polynomials. This operator is called quasi-exactly solvable.