http://127.0.0.1/xmlui/handle/123456789/6436 Mon, 14 Sep 2026 17:36:48 GMT 2026-09-14T17:36:48Z 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