"Solved and unsolved problems of structural chemistry" by Milan Randić, Marjana Novič, and Dejan Plavšić CRC Press, Boca Raton, 2016, XX+472 pp. ISBN 13‐978‐1‐4987‐1151‐7. Issue 21 (30th April 2019) - Carbó‐Dorca, Ramon