M.Yu. Kagan, D.V. Efremov, M.S. Mar’enko, and V.V. Val’kov, Kohn-Luttinger effect and anomalous pairing in repulsive Fermi-systems at low density (Review Article), Low Temp. Phys. 38, (2012) [Fiz. Nizk. Temp. 38, 1102-1108, (2012)] DOI: https://doi.org/10.1063/1.4752091.