@article{JGG_2020_24_2_JGG_2020_24_2_a8,
     author = {M. N. I. Khan and L. S. Das },
     title = {On {CR-Structures} and the {General} {Quadratic} {Structure}},
     journal = {Journal for geometry and graphics},
     pages = {249--255},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {2020},
     url = {http://geodesic.mathdoc.fr/item/JGG_2020_24_2_JGG_2020_24_2_a8/}
}