Modak, R. S. An improved scheme for the evaluation of modes of a multi group neutron diffusion equation / R. S. Modak, V. K. Jain and H. P. Gupta. - Bombay : Bhabha Atomic Research Centre, 1994. - 23 p. ; 28 cm. Previous name of the publisher : A. E. E. T. Dewey Class. No.: 539.7