http://www.uoguelph.ca/~antoon/circ/mispulse.htm
http://www.edn.com/archives/1994/120894/25di6.htm
this circuit delivers stable, fast-settling reference-current pulses
http://www.edn.com/archives/1994/120894/25di5.htm
http://www.edn.com/archives/1996/071896/15di6.htm
http://www.web-ee.com/Schematics/Pulser/pulser.htm
circuit deletes narrow pulses from fixed-frequency PWM waveforms
http://www.edn.com/archives/1997/112097/24di_03.htm
trims the trailing portion of a large-width input pulse to a size as narrow as 10 nsec irrespective of the input-pulse width, circuit doesn't require a capacitor to generate the timing pulse
http://www.edn.com/archives/1997/030397/05DI_07.htm
produces clean 2mS logic pulses at rate of one per second while drawing only 1 microamp from a 9 volt battery, uses 2 transistor acting as programmable unijunction transistor
http://www.imagineeringezine.com/PDF-FILES/9vpulse.pdf