1. Bubbles, Drops, and Particles;Clift,1978
2. Theory of flotation of small and medium size particles;Derjaguin;Trans. IMM,1960
3. Theory of flotation of small and medium size particles;Derjaguin;Trans. IMM,1960
4. Theory of flotation of small and medium size particles;Derjaguin;Trans. IMM,1960
5. Micro-flotation;Derjaguin,1986