Lessons learned from the design, fabrication, integration, and test of a cryogenic IR spectrometer for ground-based astronomy

Lessons learned from the development of the XMM optics

Lessons learned in the development of the Hubble Space Telescope software

Let Cognitive Radios Imitate: Imitation-based Spectrum Access for Cognitive Radio Networks

Let Us Dance Just a Little Bit More --- On the Information Capacity of the Human Motor System

Let us Examine Some New Isolated Neutron Stars with Chandra

Let's Get Ready to Rumble: Crossover Versus Mutation Head to Head

Let's get the student into the driver's seat

Let's Make a Difference!

Letg Spectroscopy of the MKN 478: the Brightest Narrow-Line Seyfert 1 IN the Soft X-Ray Sky

Letter : NIR FT-Raman microspectroscopy of fluid inclusions: Comparisons with VIS Raman and FT-IR microspectroscopies

Letter to Sound Rules for Accented Lexicon Compression

LETTER TO THE EDITOR: A note on the relativistic Euler equations

LETTER TO THE EDITOR: Asymptotically flat soliton solutions in bosonic string theory

LETTER TO THE EDITOR: Measurements Pertaining to the Long-Term Stability of the Density of Mercury

Letter to the Editor: A comparison of F-region ion velocity observations from the EISCAT Svalbard and VHF radars with irregularity drift velocity measurements from the CUTLASS Finland HF radar

LETTER TO THE EDITOR: A new 3-manifold invariant from supergravity

LETTER TO THE EDITOR: Coherent degenerate dark matter: a galactic superfluid?1Coherent degenerate dark matter: a galactic superfluid?

LETTER TO THE EDITOR: Effective non-relativistic potential for higher-derivative gravity in D dimensions

letter to the editor: Electric field fluctuations (25-35 min) in the midnight dip equatorial ionosphere