pulsar synthesis-help?

hello,

I am trying to find sources on the net about pulsar synthesis (and I am astonished with the fact that I can find almost nothing about the matter). I have already read the microsound book by curtis roads but I am facing difficulties trying to create a complex patch for the max. During my search on the net I found this blog

http://www.jg1983.co.uk/Blog/pulsar-synthesis-in-maxmsp

It is using a pulsar~ abstraction which cannot find anywhere? Does anyone know if this is available anywhere? Apart from that any tips on pulsar woudl be highly appreciated… I am really confused about the masking and the pulsaret envelope (what’s the diference with an amplitude one).

thanks in advance,
t