TY - BOOK AU - Froman Nanny & Froman Per Olof TI - Stark Effect in a Hydrogenic Atom Or Ion: Treated by the Phase-Integral Method with Adjoined Papers by a Hokback and P O Froman SN - 9781860949258 PB - ICP KW - Mathematics UR - https://www.worldscientific.com/worldscibooks/10.1142/p528#t=toc ER -