Necessity of ‘two time zones : IST-I (UTC + 5 : 30 h) and IST-II (UTC + 6 : 30 h)’ in India and its implementation

Autor: Sharma, Lakhi, De, S., Kandpal, P., Olaniya, M. P., Yadav, S., Bhardwaj, T., Thorat, P., Panja, S., Arora, P., Sharma, N., Agarwal, A., Senguttuvan, T. D., Ojha, V. N., Aswal, D. K.
Zdroj: Current Science, 2018 Oct 01. 115(7), 1252-1261.
Databáze: JSTOR Journals