D2 Article in a professional compilation book

NuSTAR observation of RX J0440.9+4431 near the peak of the 2022-2023 giant outburst #15874

Authors: Salganik Alexander, Tsygankov Sergey S., Lutovinov Alexander A., Molkov Sergey V.

Publisher: R. E. Rutledge

Publication year: 2023

Book title : Astronomer’s Telegram

Journal name in source: The Astronomer's Telegram

Series title: Astronomer’s Telegram

Number in series: 15874

Web address : https://www.astronomerstelegram.org/?read=15874