International Journal of Theoretical Physics
International Journal of Theoretical Physics > 2019 > 58 > 3 > 1008-1016
International Journal of Theoretical Physics > 2019 > 58 > 8 > 2654-2663
International Journal of Theoretical Physics > 2019 > 58 > 9 > 2986-2993
International Journal of Theoretical Physics > 2019 > 58 > 10 > 3323-3332