BOUNDARY OF LIQUID PHASE THERMODYNAMIC STABILITY AT NEGATIVE PRESSURES Статья Martynyuk M.M., Kravchenko N.Yu. Russian Journal of Physical Chemistry A. Том 72. 1998. С. 885-887
HARMONIC POLYNOMIALS IN QUANTUM EUCLIDEAN SPACES Статья Zhelobenko D.P. Doklady Mathematics. Том 57. 1998. С. 358-360