An interesting series of papers, written in Italian and published in the magazine Audiocostruzione, about the design of a small bookshelf loudspeaker, thought to be, in its aspect and sound, a modern LS3/5A reproduction:

Part 1 (4MB Pdf)
Part 2 (5.4 Mb Pdf)
Part 3 (6.5 Mb Pdf)
Part 4 (1.9 Mb Pdf)