VIA lecture by Prof. Richard Woodart The Case against Ghosts in Fundamental Theory" was given on 26.04.2019.
Its presentation is attached and the record is available in VIA library
http://viavca.in2p3.fr/richard_woodard.html
The following questions and comments were addressed in discussion
emre: Is String theory or Loop QG suffer from this problem? There are some ideas without a Lagrangian but just equation of motion? Can they avoid the Ostragski problem