It is interesting to note that this equation appeared exactly as it has been written in David Bohm's 1951 book Quantum Theory but was not called the Klein-Gordon equation.
Ito ay kagiliw-giliw na tandaan na ang equation na ito ay lumitaw eksaktong bilang ito ay nakasulat sa David Bohm's 1951 book quantum theory ngunit ay hindi na tinatawag ang Klein-Gordon equation.