Complex sentence: This mathematical function "v" (l') has been called the Principal Schottky-Nordheim Barrier Function: it is a function of mathematical physics in its own right: an explicit series expansion is derived in DF08.
Split into simpler sentences: This mathematical function "v" (l') is a function of mathematical physics in its own right and has been called the Principal Schottky-Nordheim Barrier Function. An explicit series expansion for "v" (l') is derived in DF08.