Synthesis and spectroscopic characterization of Nicotinaldehyde based derivatives: SC-XRD, linear and non-linear optical studies - Ahmed, Adnan; Adeel, Muhammad; Khan, Ilham; Khalid, Muhammad; Raouf, Abdul; Aiman, Ume; Villinger, Alexander; Braga, Ataualpa Albert Carmo; Assiri, Mohammed A; Imran, Muhammad (Journal of Molecular Structure, 2023)