PYSHELLSPEC is an advanced astrophysical tool for modeling of
binary systems with circumstellar matter (e.g. accretion disk, jet),
computation of interferometric observables |V^2|, arg T_3, |T_3|,
|dV|, arg dV, comparison of light curves, spectro-interferometry,
spectra and SED with observations, and both global and local optimisation
of system parameters. It is based on Shellspec, a 1-dimensional
LTE radiation transfer code by Budaj & Richards (2004).

If you use this code, please cite the original references:

  M. Bro\v z, D. Mourard, J. Budaj, P. Harmanec, H. Schmitt,
  I. Tallon-Bosc, D. Bonneau et al., Optically thin medium
  in \beta Lyr A system, A&A 645, A51, 2021.

  D. Mourard, M. Bro\v z, J. Nemravov\'a, P. Harmanec, J. Budaj,
  F. Baron, J.D. Monnier et al., Physical properties of \beta Lyr A
  and its opaque accretion disk, A&A 618, A112, 2018.

The code and examples can be downloaded from:

  https://sirrah.troja.mff.cuni.cz/~mira/betalyr/

The authors are Jana Nemravova and M. Broz, as described in the Changelog.

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For differential evolution, it was necessary to download:

  _differentialevolution.py

put it in:

  /usr/lib/python2.7/dist-packages/scipy/optimize/

and modify __init.py__:

  from ._differentialevolution import differential_evolution

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Installation of several standard python modules was required:

  apt-get install python
  apt-get install python-matplotlib
  apt-get install python-numpy
  apt-get install python-scipy
  apt-get install python-nlopt
  apt-get install python-astropy

Alternatively, one can use:

  apt-get install python-pip
  pip install astropy
  ...