中级
THE MODULAR PERIODIC MUSICAL STAFF BASED ON BILINEAR STAFF-MODULES
Periodic musical staff (PMS) with one/two/three bilinear staff-modules (BSM) by: dr. Andrei-Lucian Drăgoi
(www.dragoii.com, www.dragoii.com/gcp, www.dragoii.com/gci, www.dragoii.com/pms)
For my preprints on PMS, see URLs: www.researchgate.net/publication