International Telecommunication Union. (2023). Handbook on small satellites (2023 ed.).
Gorban, A. N., & Karlin, I. (2013). Hilbert’s 6th problem:[…]
V. S. Seshavatharam, U., & Lakshminarayana, S. (2013). Hubble volume[…]
Gradshteyn, I. S., Ryzhik, I. M., Jeffrey, A., & Zwillinger,[…]