-Guest Editorial-U. Feller, pp. 225 -Optical Frequency Standards And Measurement-J. L. Hall, And J. Ye, pp. 227 -The BIPM Laser Standards At 663 Nm And 532 Nm Simultaneously Linked To The SI Second Using A Femtosecond Laser In In An Optical Clock Configurations- L.-S. Ma, L. Robertsson, S. Picard, J.-M. Chartier, H. Karlsson, E. Prieto, And R.S. Windeller, pp.32 -Results From International …