Annotating a Proxmark 3 mifare classic trace

Proxmark 3s hi14areader command seems to initialise a card and send a request for block 0 using key A. It does this repeatedly a few times. I've annotated a trace from a mifare classic card.

 +      0:    :     52                                    # No idea, part of anti-collision from Koning thesis...
 +     68:   0: TAG 04  00                                # No idea, part of anti-collision from Koning thesis...
 +    -68:    :     93  20                                # Card UID request (READER)
 +    136:   0: TAG eb  5c  96  69  48                    # Card UID
 +   -136:    :     93  70  eb  5c  96  69  48  15  d4    # 93 70 followed by UID, followed by 2 CRC bytes (READER)
 +    212:   0: TAG 08  b6  dd                            # No idea, part of anti-collision from Koning thesis...
 +   -212:    :     60  00  f5  7b                        # Authentication request. 60 means auth with key A. (61 means key B). Use block 00. Last 2 bytes CRC (READER)
 +    337:   0: TAG a0  f4  b9  78                        # No idea                      *  mifarecrack tries to parse data from here 1
 +   -337:    :     52                                    # No idea - All starts again!  *  mifarecrack tries to parse data from here 2
 +      0:    :     52                                    # No idea                      *  mifarecrack tries to parse data from here 3
 +    405:   0: TAG 04  00                                # No idea
 +   -405:    :     93  20                                # Card UID request (READER)
 +    481:   0: TAG eb  5c  96  69  48                    # Card ID
 +   -481:    :     93  70  eb  5c  96  69  48  15  d4    # Reader sends UID again