http://127.0.0.1/xmlui/handle/123456789/6436 Fri, 17 Apr 2026 16:10:58 GMT 2026-04-17T16:10:58Z http://127.0.0.1/xmlui/handle/123456789/6437 Studies on Rectangular Wave Modulation and Some Related by Asynchronous Pulse Modulation Systems Sharma, P. D. Thu, 15 Dec 1966 00:00:00 GMT http://127.0.0.1/xmlui/handle/123456789/6437 1966-12-15T00:00:00Z