"Architecture of a Masterpiece" by Roman Vlad

Yes, from wiki

Architecture of a masterpiece. Analysis of Igor Stravinsky's Rite of Spring, BMG Publications, Turin, 2005 – ISBN 88-7592-802-9

Waiting for more authoritative opinions:

http://www.sidam.org/?p=222

http://www.radio.rai.it/radio3/radio3_suite/view.cfm?Q_EV_ID=152122&Q_PROG_ID=68

16-11-2005

Meeting with Roman Vlad

For Ricordi, Architecture of a Masterpiece has been published, a collection of analyses made by Roman Vlad on Igor Stravinsky's Le Sacre du Printemps. The collected essays deal with Stravinsky's composition techniques: octotonia, golden proportions, rhythmic construction, harmony, and much more.

Maestro Vlad came to our studios, in Sala M on via Asiago, and with the aid of the piano, he introduced us—as only he knows how to do—to a greater understanding of what he himself specified is not "a" masterpiece, but "the" masterpiece of twentieth-century music

http://www.radio.rai.it/radio3/radio3_suite/view.cfm?Q_EV_ID=152122&Q_PROG_ID=68

ScalaQuaranta wrote:

as farla sembrare, da quello che ho capito, un'analisi approfondita della "Sagra della Primavera".

Exactly

Interesting text and in Italian