[en] The neutrino burst from supernova 1987 detected by Mont Blanc, Kamiokande, IMB and Baksan have been studied within 0.01 ms to 1 ms by Ferraz-Mello technique to find periods from uneven spaced data. It is found that only Kamiokande and IMB neutrino data have significant periods 0.499 ms and 0.568 ms, respectively. The authors' analysis suggest that the supernova 1987A contains a submillisecond pulsar and is supported by the recently discovered submillisecond period detected from supernova 1987A optical data. This paper suggests that the pulsar in supernova 1987A is a radially pulsating neutron star