J. Koch

1. Every planar map is four colorable. Part II: Reducibility
   1977/09/01 by K. I. Appel, Wolfgang Haken, J. Koch · 16 citations
   Engineering · Computer Science · #3D Modeling in Geospatial Applications #Computational Geometry and Mesh Generation
2. Emission dynamics and optical gain of 1.3-μm (GaIn)(NAs)/GaAs lasers
   2002/01/01 by Martin R. Hofmann, Nils C. Ger­hardt, Anke Wagner +14 · 2 citations
   Engineering · Physics and Astronomy · #Semiconductor Lasers and Optical Devices #Semiconductor Quantum Structures and Devices #Photonic and Optical Devices
3. Recent advances in NiMH battery technology
   2007/03/01 by M.A. Fetcenko, S.R. Ovshinsky, B. Reichman +6 · 1 citation
4. Eine Synthese aromatischer Aldehyde
   1897/05/01 by Ludwig Gattermann, L. Gattermann, J. A. Koch +1 · 1 citation
   Chemistry · Environmental Science · #Chemistry and Chemical Engineering #Inorganic and Organometallic Chemistry #Various Chemistry Research Topics