; Camilo, Fernando (March 2008). "Eight New Millisecond Pulsars in NGC 6440 and NGC 6441". The Astrophysical Journal. 675 (1): 670–682. arXiv:0711.0925...
2 KB (177 words) - 13:54, 10 May 2024
catalogue are US$290 for the first coin and US$100 for the Irian coin. While NGC online catalogue evaluate one of the coins as worth US$290. West Irian coin...
37 KB (3,327 words) - 10:28, 11 November 2024