High-Conformal Gearing: A New Look at the Concept of Novikov Gearing (The Key Features of Novikov Gearing) -- Meshing Theory for Abnormal Novikov Helical Gears -- Helical Bevel Novikov Gears -- Optimization of Novikov Gearing by Means of Specific Load Capacity Criterion -- Modern Methods of Estimating and Increasing the Load-Bearing Capacity of Novikov Gearing -- Some Features of the Contact Strength of Novikov Gearing -- Tooth Relieving of Hobs for Cutting Novikov Gears with Double Lines of Action -- About the Priority of M.L. Novikov in the Development of Novikov Gear System -- Prediction, Control, and Management, of Gear Manufacturing Accuracy -- Main Representations, Models and Software of Gear Trains as a Basis for Creating their Digital Twins -- Elliptical Gear Drives -- On the Lack of Understanding of the Scientific Theory of Gearing by the Majority of Gear Scientists and Engineers -- Recent Accomplishments in Novikov/Conformal Gearing: Theory, Design, Production, Inspection,and Application (Review) -- Bibliography on Novikov Gear System -- Appendices.